Lactic Acid 10% + HA
Lactic Acid 10% + HA
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The Ordinary Lactic Acid 10% + HA is a high-performance, water-based clinical treatment engineered to significantly improve skin radiance and surface texture through advanced Alpha Hydroxy Acid (AHA) exfoliation. Lactic Acid is a milder, more hydrating alternative to Glycolic Acid, making it a favorite in the US for those who seek professional resurfacing results without excessive downtime or barrier stress. This high-strength 10% concentration works by dissolving the biological bonds that hold dead skin cells to the stratum corneum, facilitating a more efficient cellular turnover process. By clearing away this surface debris, the serum reveals a measurably smoother, more luminous, and uniform complexion underneath. To further support skin health and comfort, the formula is fortified with a purified Tasmanian Pepperberry derivative, known for its ability to reduce the inflammation and sensitivity often associated with chemical exfoliation. Additionally, the inclusion of Hyaluronic Acid ensures that the skin remains hydrated during the resurfacing process, preventing the dryness and "tight" feeling that can occur with lower-quality acids. Whether you are addressing early signs of aging, dullness, or uneven skin grain, this solution provides a clear, science-backed route to revitalized and radiant skin. Available for fast US delivery at theordinaryusa.co.
In the United States, the skin is subject to a complex array of environmental stressors that vary significantly by region. For American consumers living in high-pollution metropolitan hubs like New York City, Chicago, or Los Angeles, the daily accumulation of urban particulate matter can lead to "City Skin"—characterized by chronic congestion, sallow dullness, and environmental sensitivity. Conversely, in the arid climates of the Southwest or the moisture-sapping winters of the Northeast, the skin’s barrier is often compromised, making traditional exfoliants feel too aggressive. The Ordinary Lactic Acid 10% + HA is a US essential because it provides a "smart" approach to resurfacing. As a larger molecular weight AHA, Lactic Acid penetrates the skin more slowly than Glycolic Acid, providing a controlled exfoliation that is ideal for the diverse US complexion. Its hydrating properties are perfectly suited for the fast-paced American lifestyle, offering a clinical-grade "glow-up" that supports the barrier while refining the grain. Whether you are navigating the smog-heavy commute of Houston or the dry air of a transcontinental flight, this serum provides the resilient resurfacing infrastructure needed to keep your skin looking polished and vibrant in any regional environment.
- Advanced Surface Resurfacing: Effectively dissolves dead skin cell buildup to reveal a measurably smoother and brighter skin surface.
- Intensive Radiance Boost: Works to eliminate sallow dullness and lackluster skin tone for a vibrant, healthy-looking US glow.
- Refines Skin Texture: Visibly smooths out rough patches and minor surface irregularities, promoting a more uniform skin grain.
- Unifies Uneven Skin Tone: Helps to balance the appearance of localized discoloration and minor post-inflammatory marks.
- Superior Hydration Support: Fortified with Hyaluronic Acid to ensure the skin remains plumped and comfortable during exfoliation.
- Soothing Tasmanian Pepperberry: Infused with a botanical derivative clinically shown to reduce the irritation associated with acid use.
- High-Strength Potency: A 10% concentration for those whose skin has built a tolerance to milder exfoliants and requires deeper results.
- Optimizes Absorption: By clearing the path of dead skin cells, it allows subsequent serums and oils to penetrate more effectively.
- Non-Comedogenic & Oil-Free: A lightweight, aqueous formula that provides intensive resurfacing without clogging pores.
- Universal Versatility: A fundamental exfoliation layer that is effective and safe for most US skin profiles.
- Rapid Absorption Formula: Sinks in instantly with zero residue, perfect for effortless layering in a busy American routine.
- Sustainably & Ethically Produced: A 100% vegan and cruelty-free formula that meets the highest US clinical standards.
The core science of this serum is centered on Lactic Acid, an Alpha Hydroxy Acid (AHA) known for its dual ability to exfoliate and hydrate. In clinical dermatology, Lactic Acid is unique because it is part of the skin's natural moisturizing factors (NMF). Its larger molecular size compared to Glycolic Acid ensures a more gradual penetration, which significantly reduces the risk of acute irritation. At a 10% concentration, it works through a process called desquamation, weakening the ionic bonds between corneocytes (dead skin cells) to encourage shedding. This acceleration of turnover not only improves surface texture but also promotes the synthesis of new skin cells. Our formula is held at a pH of approximately 3.8, which is the pKa of Lactic Acid—the precise point where the concentration of free acid and salt are equal, ensuring maximum efficacy and stability.
To mitigate the stinging sensation often associated with chemical peels, we have included Tasmanian Pepperberry. The science of this extract involves a unique compound called polygodial, which has been clinically demonstrated to inhibit the TRPV1 receptors in the skin. These receptors are responsible for sensing the burning signals triggered by acids. By calming these neural pathways, the Pepperberry derivative ensures that the 10% concentration remains comfortable for regular clinical use on the US complexion.
The formula is further enhanced with Sodium Hyaluronate, a salt form of Hyaluronic Acid that possesses a lower molecular weight for deeper penetration. 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 stratum corneum, it buffers the skin against the potentially drying effects of the acid, leaving the face feeling hydrated and supple rather than stripped.
| Product Name | Lactic Acid 10% + HA |
| Brand | The Ordinary |
| Format | Water-Based Aqueous Serum |
| Key Active | 10% Lactic Acid (AHA) |
| pH Level | Approximately 3.6 – 3.8 |
| Targets | Dullness, Textural Irregularities, Uneven Tone |
| Suited To | All Skin Types (Ideal for Dry or Sensitive Profiles) |
| Volume | 30mL |
| Vegan / Cruelty-Free | Yes / Yes |
| US Availability | Official US Store — theordinaryusa.co |
To maximize the resurfacing and hydrating results of this high-strength serum, follow these professional application protocols:
- Preparation: Start with a clean, dry face. We recommend using a gentle cleanser like the Glucoside Foaming Cleanser.
- Timing: Use ideally in the evening (PM) routine. We recommend using it once per day to support the skin's natural overnight repair cycle.
- Application: 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.
- Sequence: Being a water-based serum, it should be applied after cleansing and before heavier serums, oils, or moisturizers.
- The "Glow" Tip: If your skin is sensitive, you can dilute this serum with other treatments (like Hyaluronic Acid 2% + B5) until your skin builds tolerance to the 10% concentration.
- Sun Alert: This product contains an AHA that may increase 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.
Note: Patch test before first use. Apply only to unbroken skin as directed.
The Ordinary Lactic Acid 10% + HA is designed for anyone seeking a more polished and hydrated complexion:
- Dull and Sallow Skin: US consumers whose skin looks tired or "gray" from environmental stress and needs a radiance boost.
- Textural Concern Profiles: Individuals struggling with rough skin grain, minor bumps, or uneven patches.
- Dry and Dehydrated Skin: Those who need chemical exfoliation but find other acids too drying for their barrier.
- Uneven Tone Concerns: Anyone seeking to fade the appearance of sun spots and localized pigmentation.
- Retinoid Users: An excellent "off-night" treatment to clear dead skin and improve the performance of nightly retinoids.
- All US Skin Profiles: A non-comedogenic, pH-balanced formula that is safe and effective for most skin types.
What does The Ordinary Lactic Acid 10% + HA do?
It provides high-performance resurfacing and hydration by utilizing a 10% concentration of Lactic Acid to dissolve dead skin cells, targeting dullness and rough texture for a brighter, smoother complexion.
Is 10% Lactic Acid too strong for my skin?
At 10%, this is a high-strength treatment. If you are new to acids, we recommend starting with Lactic Acid 5% + HA or diluting this formula with a hydrating serum until your skin adjusts.
How is Lactic Acid different from Glycolic Acid?
Lactic Acid has a larger molecular size, which means it penetrates the skin more slowly and gently. It also has natural humectant properties, making it more hydrating and better for sensitive US skin than Glycolic Acid.
Can I use this with Retinol or Vitamin C?
We recommend separating these treatments. Use Lactic Acid in the evening and Vitamin C in the morning. Avoid using Lactic Acid and Retinol on the same night to prevent over-exfoliation.
Will it make my skin purge?
As with any AHA that increases cellular turnover, a minor "purging" period is possible. If this occurs, it typically resolves within 2-4 weeks. If irritation persists, reduce frequency of use.
Do I need to wash it off?
No. It is a leave-on serum designed to work overnight. You should follow it with your regular moisturizer to lock in the hydration and actives.
Can I use it if I have sensitive skin?
Yes, because it is formulated with Tasmanian Pepperberry to reduce irritation. However, we always suggest a patch test first if your skin is reactive.
Is it safe for use during pregnancy?
Lactic Acid is generally considered safe during pregnancy. However, because skin sensitivity can change, we recommend consulting your US physician before starting a new acid treatment.
How long will a 30mL bottle typically last?
With daily use (2-3 drops), a bottle typically lasts between 2 and 3 months, providing exceptional clinical value.
Does it have a scent?
It is 100% fragrance-free. Any clinical aroma is the natural result of the Lactic Acid and the botanical Tasmanian Pepperberry extract.
Will it help with my large pores?
Yes. By clearing the surface buildup that can stretch pores, it helps the skin grain look more refined and the pores appear smaller.
Why is it a water-based serum?
The aqueous format ensures that the Lactic Acid can interact effectively with the skin's surface without being blocked by oils or heavy silicones.
Can I use it on my body?
Yes! It is excellent for smoothing rough skin on the elbows, knees, or the back of the arms (KP).
Where should I store it?
Store in a cool, dry place away from direct sunlight. It does not require refrigeration to remain potent and stable.
What should I do if I get a tingling sensation?
A mild tingling is normal as the acid works. If you experience intense burning or see redness, rinse off immediately and focus on barrier repair.
Build a high-performance ritual for radiance and smoothness at theordinaryusa.co with these complementary products:
- 👉 Glucoside Foaming Cleanser — The perfect gentle start to your exfoliating routine.
- 👉 Hyaluronic Acid 2% + B5 — Layer after the acid to deeply rehydrate the newly resurfaced skin.
- 👉 Soothing & Barrier Support Serum — The "Pink Serum" for the ultimate post-exfoliation recovery.
- 👉 Natural Moisturizing Factors + HA — Finish your routine with this skin-identical moisturizer seal.
- 👉 Multi-Peptide Lash and Brow Serum — Complete your high-performance clinical beauty regimen.
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