{"title":"Mandelic Acid","description":null,"products":[{"product_id":"mandelic-acid-10-percent-ha-the-ordinary-usa","title":"Mandelic Acid 10% + HA","description":"\u003cdiv class=\"product-description-us\"\u003e\n\u003cdiv\u003e\u003cstrong\u003eWhat does The Ordinary Mandelic Acid 10% + HA do?\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eThe Ordinary Mandelic Acid 10% + HA is an ultra-gentle, high-performance aqueous treatment meticulously engineered to provide effective surface exfoliation while maintaining the highest level of skin comfort. In the clinical world of Alpha Hydroxy Acids (AHAs), Mandelic Acid stands apart due to its unique molecular architecture. With a significantly larger molecular weight than Glycolic Acid (the smallest AHA) and Lactic Acid, Mandelic Acid penetrates the skin surface more slowly and uniformly. This slow-release mechanism ensures that the acid does not \"shock\" the skin barrier, making it the premier clinical choice for individuals with highly sensitive, reactive, or deeper skin tones prone to post-inflammatory hyperpigmentation. This 10% concentration works by gently weakening the biological bonds that hold dead skin cells to the stratum corneum, facilitating a more controlled and harmonious cellular turnover process. By clearing away this surface debris, the serum reveals a measurably smoother, more luminous, and clearer complexion underneath. Fortified with a specialized Hyaluronic Acid (HA) complex, the formula provides a multi-depth moisture cushion that buffers the skin during resurfacing, ensuring your face feels hydrated and supple rather than stripped. Whether you are dealing with persistent dullness, minor textural irregularities, or blemish-prone congestion, this ultra-gentle solution provides a clear, science-backed route to revitalized skin without the typical downtime or irritation of stronger peels. Available for fast US delivery at theordinaryusa.co.\u003c\/p\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eWhy The Ordinary Mandelic Acid 10% + HA is a US Skincare Essential\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eIn the United States, the skin is subject to a staggering variety of regional environmental pressures that can lead to chronic sensitivity and inflammatory stress. For American consumers living in high-UV regions like the Sun Belt—stretching from Florida and the Southeast to the intense sun of Arizona, Nevada, and Southern California—photo-aging and localized hyperpigmentation are primary concerns. However, many US users find that traditional high-strength AHAs can exacerbate redness or trigger \"rebound\" pigmentation in sun-stressed skin. The Ordinary Mandelic Acid 10% + HA is a US essential because it provides a \"safer,\" more stable pathway to resurfacing that respects these delicate conditions. Its lipophilic (oil-loving) properties also make it highly effective for American metropolitan dwellers in cities like New York, Chicago, or Los Angeles, where urban pollution and particulate matter contribute to congested \"City Skin.\" Unlike water-only soluble acids, Mandelic Acid’s unique structure allows it to interact with surface oils more effectively, clearing congestion while its slow penetration rate protects against the harshness of indoor HVAC climate control common in US offices and homes. It meets the high US demand for clinical-grade \"Clean Beauty\" that prioritizes molecular transparency and skin barrier health. Whether you are navigating the dry air of a transcontinental flight or the smog-heavy commute of a US city, this serum provides the resilient, low-irritation infrastructure needed to keep your skin looking polished and radiant in any regional environment.\u003c\/p\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eKey Benefits of The Ordinary Mandelic Acid 10% + HA\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Gentle Surface Resurfacing:\u003c\/strong\u003e Effectively dissolves dead skin cell buildup to reveal a measurably smoother skin surface with minimal risk of irritation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlow-Penetration Technology:\u003c\/strong\u003e Utilizes a large molecular weight to ensure a gradual and controlled exfoliation process, ideal for sensitive skin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntensive Radiance Boost:\u003c\/strong\u003e Works to eliminate sallow dullness and lackluster skin tone for a vibrant, healthy-looking US glow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTargets Blemish-Prone Congestion:\u003c\/strong\u003e Its lipophilic nature helps it interact with surface oils to clear pores and reduce the appearance of small bumps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnifies Uneven Skin Tone:\u003c\/strong\u003e Effectively balances the appearance of localized discoloration and minor post-inflammatory marks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe for Deeper Skin Tones:\u003c\/strong\u003e The gentle penetration significantly reduces the risk of triggering post-inflammatory hyperpigmentation (PIH).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Hydration Support:\u003c\/strong\u003e Fortified with Hyaluronic Acid to ensure the skin remains plumped and comfortable during the resurfacing cycle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefines Skin Grain \u0026amp; Texture:\u003c\/strong\u003e Visibly smooths out minor \"bumpy\" texture and rough patches for a silkier, more polished skin feel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-Comedogenic \u0026amp; Oil-Free:\u003c\/strong\u003e A lightweight, aqueous formula that provides intensive results without clogging pores or feeling heavy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimizes Skincare Routine:\u003c\/strong\u003e Preps the skin for better absorption of subsequent treatments, acting as a high-performance \"primer\" for your actives.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEthically \u0026amp; Sustainably Produced:\u003c\/strong\u003e A 100% vegan and cruelty-free formula that meets the highest US standards for clinical beauty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Daily Defense:\u003c\/strong\u003e A fundamental resurfacing layer that is effective and safe for almost all US skin profiles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eKey Ingredients and The Science Behind Them\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cstrong\u003eMandelic Acid (10%)\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eThe core science of this treatment is centered on \u003cstrong\u003eMandelic Acid\u003c\/strong\u003e, an aromatic Alpha Hydroxy Acid (AHA) derived from bitter almonds. In clinical dermatology, Mandelic Acid is distinguished by its \u003cstrong\u003emolecular size\u003c\/strong\u003e; it is roughly twice the size of Glycolic Acid. This physical property ensures a much slower rate of penetration through the lipid bilayer of the stratum corneum, which dramatically reduces the potential for acute inflammatory responses and \"acid sting.\" Beyond its size, Mandelic Acid is unique among AHAs for its \u003cstrong\u003elipophilic\u003c\/strong\u003e character, meaning it is attracted to oils. This allows it to penetrate deeper into the sebaceous environment of the pore compared to water-soluble-only AHAs, making it highly effective for managing texture and clarity in oily-prone US skin types. At a 10% concentration, it works through \u003cstrong\u003edesquamation\u003c\/strong\u003e, weakening the ionic bonds between skin cells to encourage healthy shedding while providing mild antimicrobial benefits. Our formula is held at a pH of approximately 3.5 to 3.7, which is the pKa of Mandelic Acid—ensuring peak molecular stability and clinical bio-availability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cstrong\u003eSodium Hyaluronate (Hyaluronic Acid)\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eThe formula is further enhanced with \u003cstrong\u003eSodium Hyaluronate\u003c\/strong\u003e, a salt form of Hyaluronic Acid that possesses a lower molecular weight for deeper hydration. The science of HA involves its incredible ability to bind up to 1,000 times its weight in water. By creating a moisture reservoir within the surface layers, it buffers the skin against the potentially drying effects of the acid, leaving the face feeling hydrated and supple rather than stripped. This is particularly vital for American consumers whose skin has been sensitized by environmental particulate matter or harsh US winters.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eSpecifications Table\u003c\/strong\u003e\u003c\/div\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003eMandelic Acid 10% + HA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eThe Ordinary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eWater-Based Aqueous Serum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKey Active\u003c\/td\u003e\n\u003ctd\u003e10% Mandelic Acid (AHA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Level\u003c\/td\u003e\n\u003ctd\u003eApproximately 3.5 – 3.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTargets\u003c\/td\u003e\n\u003ctd\u003eDullness, Texture, Uneven Tone, Congestion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuited To\u003c\/td\u003e\n\u003ctd\u003eAll Skin Types (Ideal for Sensitive and Deeper Tones)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e30mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVegan \/ Cruelty-Free\u003c\/td\u003e\n\u003ctd\u003eYes \/ Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUS Availability\u003c\/td\u003e\n\u003ctd\u003eOfficial US Store — theordinaryusa.co\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eHow to Use The Ordinary Mandelic Acid 10% + HA\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eTo maximize the resurfacing and clarifying results of this ultra-gentle serum, follow these professional application protocols:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreparation:\u003c\/strong\u003e Start with a clean face. We recommend a gentle, lipid-preserving cleanser like the Squalane Cleanser.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Dry Skin Rule:\u003c\/strong\u003e Wait for the skin to be \u003cstrong\u003ecompletely dry\u003c\/strong\u003e. Do not use on wet or damp skin, as water can increase the penetration speed of acids and risk irritation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Dispense 2-3 drops into the palms of your hands and press gently onto the entire face and neck. Avoid the immediate eye area and eyelids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTiming:\u003c\/strong\u003e Use ideally in the \u003cstrong\u003eevening (PM)\u003c\/strong\u003e routine. While gentle, we recommend starting with 2-3 times per week and gradually increasing to daily use as your skin builds tolerance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSequence:\u003c\/strong\u003e Being a water-based serum, it should be applied after cleansing and \u003cem\u003ebefore\u003c\/em\u003e heavier serums, oils, or moisturizers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSun Alert:\u003c\/strong\u003e Mandelic Acid increases your skin's sensitivity to the sun. Always finish your morning routine with a broad-spectrum high-SPF US sunscreen and limit sun exposure for one week after use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRinse:\u003c\/strong\u003e This is a leave-on treatment. Do not rinse off after application.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Patch test before first use. Apply only to unbroken skin as directed.\u003c\/p\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eWho is it for?\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eThe Ordinary Mandelic Acid 10% + HA is designed for anyone seeking a more polished and clear complexion with zero irritation:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensitive Skin Profiles:\u003c\/strong\u003e Individuals who find Glycolic or Lactic acids too aggressive for their barrier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper Skin Tones:\u003c\/strong\u003e US consumers seeking to address hyperpigmentation without the risk of post-inflammatory marks from high-strength acids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCongested \u0026amp; Blemish-Prone Skin:\u003c\/strong\u003e Those seeking to refine their skin grain and clear minor pore blockages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDull and Sallow Complexions:\u003c\/strong\u003e Anyone seeking to transform a tired-looking face into one that is visibly brighter and more radiant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAHA Beginners:\u003c\/strong\u003e Individuals who have never used chemical exfoliants and want the \"safest\" possible entry point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll US Skin Profiles:\u003c\/strong\u003e A non-comedogenic, pH-balanced formula that is safe and effective for everything from oily to very dry skin.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does The Ordinary Mandelic Acid 10% + HA do?\u003c\/summary\u003e\n\u003cp\u003eIt provides an ultra-gentle resurfacing and hydration treatment by utilizing a 10% concentration of Mandelic Acid to dissolve dead skin cells, targeting dullness and texture with a significantly lower risk of irritation than other AHAs.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs Mandelic Acid better than Glycolic Acid for sensitive skin?\u003c\/summary\u003e\n\u003cp\u003eYes. Mandelic Acid has a larger molecular size, which means it penetrates the skin more slowly and gently. This reduces the \"acid sting\" and makes it much safer for sensitive barriers and reactive complexions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this toner every single day?\u003c\/summary\u003e\n\u003cp\u003eWhile many users can tolerate nightly use, we recommend starting 2-3 times per week and gradually increasing frequency as your skin builds tolerance. Listen to your skin—if it feels tight, take a night off.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this with Retinol or Vitamin C?\u003c\/summary\u003e\n\u003cp\u003eWe recommend separating these treatments. Use Mandelic Acid in the evening and Vitamin C in the morning. Avoid using Mandelic Acid and Retinol on the same night to prevent over-exfoliation and barrier stress.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill it make my skin purge?\u003c\/summary\u003e\n\u003cp\u003eAs with any AHA that increases cellular turnover, a minor \"purging\" period is possible. Because Mandelic Acid is so gentle, this is less likely than with other acids and typically resolves within 2 weeks.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need to wash it off?\u003c\/summary\u003e\n\u003cp\u003eNo. It is a leave-on serum designed to work overnight. You should follow it with your regular moisturizer to lock in the actives and hydration.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy is it recommended for deeper skin tones?\u003c\/summary\u003e\n\u003cp\u003eAggressive acids can sometimes trigger melanin overproduction in deeper skin tones. Mandelic Acid's slow penetration rate makes it much less likely to cause the irritation that leads to post-inflammatory hyperpigmentation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs it safe for use during pregnancy?\u003c\/summary\u003e\n\u003cp\u003eMandelic Acid is generally considered safe during pregnancy. However, because skin sensitivity can change, we always recommend consulting your US physician before starting a new acid treatment.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow long will a 30mL bottle typically last?\u003c\/summary\u003e\n\u003cp\u003eWith daily use (2-3 drops), a bottle typically lasts between 2 and 3 months, providing exceptional clinical value.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes it have a scent?\u003c\/summary\u003e\n\u003cp\u003eIt is 100% fragrance-free. Any clean clinical aroma is the natural result of the Mandelic Acid and the aqueous formulation base.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill it help with my blackheads?\u003c\/summary\u003e\n\u003cp\u003eYes. Because Mandelic Acid is lipophilic (oil-attracted), it can interact with the sebum inside the pores to help clear blockages and refine the skin's grain.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy is it a water-based serum?\u003c\/summary\u003e\n\u003cp\u003eThe aqueous format ensures that the Mandelic Acid is delivered efficiently to the skin surface without being blocked by heavy oils or silicones.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use it if I have active acne?\u003c\/summary\u003e\n\u003cp\u003eWhile it is an exfoliating treatment that helps clear congestion, it is not a medical treatment for acne. For active breakouts, we recommend The Ordinary Salicylic Acid 2% Solution.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhere should I store the bottle?\u003c\/summary\u003e\n\u003cp\u003eStore in a cool, dry place away from direct sunlight. It does not require refrigeration to remain potent and stable.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat should I do if I get a tingling sensation?\u003c\/summary\u003e\n\u003cp\u003eA mild tingling is normal as the acid works. If you experience intense burning or see persistent redness, rinse off immediately and focus on barrier repair with the Soothing \u0026amp; Barrier Support Serum.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eComplete Your Skincare Routine...\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eBuild a high-performance ritual for clarity and hydration at theordinaryusa.co with these complementary products:\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e👉 \u003ca href=\"https:\/\/theordinaryusa.co\/products\/glucoside-foaming-cleanser\"\u003eGlucoside Foaming Cleanser\u003c\/a\u003e — The perfect gentle start to your exfoliating routine.\u003c\/li\u003e\n    \u003cli\u003e👉 \u003ca href=\"https:\/\/theordinaryusa.co\/products\/hyaluronic-acid-2-b5\"\u003eHyaluronic Acid 2% + B5\u003c\/a\u003e — Layer after the acid to deeply rehydrate the newly resurfaced skin.\u003c\/li\u003e\n    \u003cli\u003e👉 \u003ca href=\"https:\/\/theordinaryusa.co\/products\/soothing-barrier-support-serum\"\u003eSoothing \u0026amp; Barrier Support Serum\u003c\/a\u003e — The \"Pink Serum\" for the ultimate post-exfoliation recovery.\u003c\/li\u003e\n    \u003cli\u003e👉 \u003ca href=\"https:\/\/theordinaryusa.co\/products\/natural-moisturizing-factors-ha\"\u003eNatural Moisturizing Factors + HA\u003c\/a\u003e — Finish your routine with this skin-identical moisturizer seal.\u003c\/li\u003e\n    \u003cli\u003e👉 \u003ca href=\"https:\/\/theordinaryusa.co\/products\/multi-peptide-lash-brow-serum\"\u003eMulti-Peptide Lash and Brow Serum\u003c\/a\u003e — Complete your high-performance clinical beauty regimen for a refined look.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv\u003e\u003cstrong\u003eWhy Buy From theordinaryusa.co?\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n    \u003cli\u003e🌍 \u003cstrong\u003eOfficial US store\u003c\/strong\u003e — serving all 50 states\u003c\/li\u003e\n    \u003cli\u003e🚚 \u003cstrong\u003eFast, tracked delivery\u003c\/strong\u003e across the United States\u003c\/li\u003e\n    \u003cli\u003e✅ \u003cstrong\u003e100% authentic\u003c\/strong\u003e The Ordinary products\u003c\/li\u003e\n    \u003cli\u003e🔒 \u003cstrong\u003eSecure checkout — SSL encrypted\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003e💬 \u003cstrong\u003eDedicated customer support\u003c\/strong\u003e for American customers\u003c\/li\u003e\n    \u003cli\u003e🌱 \u003cstrong\u003eVegan \u0026amp; cruelty-free products only\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"The Ordinary","offers":[{"title":"30ml","offer_id":45198092468303,"sku":"SKU_1742499549780_937","price":7.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/3355\/2975\/files\/rdn-mandelic10_ha-bottle-30ml.webp?v=1778411536"}],"url":"https:\/\/theordinaryusa.co\/en-gb\/collections\/mandelic-acid.oembed","provider":"The Ordinary","version":"1.0","type":"link"}