Lactic Acid (88% Solution)

LACTIC ACID (88% SOLUTION)

Origin & Source

Lactic Acid is an alpha-hydroxy acid (AHA) naturally produced through the fermentation of plant-derived sugars, most commonly from corn or sugar beets. The 88% designation refers to the concentration of lactic acid in purified water, offering high potency and precise pH control in cosmetic formulations. Although lactic acid also occurs naturally in the human body—as part of cellular metabolism and the skin’s Natural Moisturizing Factor—cosmetic-grade lactic acid is produced via controlled fermentation to ensure purity, consistency, and safety.

Biochemical Profile & Relationship to Skin Biology

Lactic Acid plays a dual role in skin biology: it functions as both a hydrating molecule and a gentle exfoliant. As an AHA, it works by loosening the bonds between dead skin cells on the surface, encouraging natural shedding and improving skin smoothness. At lower concentrations and properly buffered pH levels, lactic acid acts primarily as a humectant and pH regulator rather than an exfoliant. Its larger molecular size compared to glycolic acid makes it gentler and more suitable for sensitive or dry skin types.

Skin Function & Benefits

On the skin, Lactic Acid helps improve texture, brightness, and clarity while supporting hydration. It enhances moisture retention by increasing the skin’s water-binding capacity and helps smooth rough or dull areas. Regular, controlled use can improve the appearance of uneven tone and surface texture while promoting a more luminous, refined complexion. Because lactic acid is skin-identical and naturally present in healthy skin, it is generally well tolerated when used correctly.

Formulation Role & Performance Benefits

In formulation, Lactic Acid (88%) is most often used as a pH adjuster rather than a primary exfoliating active. It allows formulators to fine-tune pH levels to optimize ingredient performance—particularly in preservative systems, humectant-rich formulas, and barrier-supportive products. Its liquid form enables precise dosing, making it essential for maintaining product stability, safety, and skin compatibility.

Typical Uses in Skincare & Body Care

Lactic Acid is commonly used in creams, lotions, toners, serums, mists, cleansers, masks, and hair care products. It is especially valuable in leave-on formulations requiring gentle exfoliation, hydration support, or precise pH control. At higher active levels, it is used in exfoliating treatments; at low levels, it plays a supportive, conditioning role.

Why Unicorn Tears Uses It

Unicorn Tears uses Lactic Acid (88%) thoughtfully and intentionally—primarily for pH balancing and gentle skin refinement. It supports ingredient stability, enhances hydration, and contributes to smoother, healthier-looking skin without harsh exfoliation. Its fermentation-derived origin, skin-identical nature, and multifunctional performance align perfectly with the brand’s commitment to transparency, efficacy, and elevated, skin-respectful luxury.