Lactic acid

Lactic acid, also known as Lactic Acid, is an alpha-hydroxy acid (AHA) that occurs naturally and can also be synthetically produced. In the cosmetics industry, lactic acid is valued for its versatile properties and effectiveness in various skincare products. It plays an important role in exfoliation, moisturizing, and skin renewal.

Cosmetic properties and effects

Exfoliation: Lactic acid acts as a chemical peel that loosens the bonds between dead skin cells and promotes their shedding. This leads to a smoother, fresher skin surface and an even complexion. Regular use can reduce the appearance of fine lines, wrinkles, and hyperpigmentation.
Moisturizing: Lactic acid has hygroscopic properties, which means that it attracts water and binds it in the skin. This helps to increase skin moisture and strengthen the skin barrier, leading to softer and smoother skin.
Skin renewal: By promoting cell regeneration, lactic acid supports the renewal of the skin and improves its texture and radiance. It helps to reduce the appearance of sun damage and signs of aging.
pH value regulation: Lactic acid is often used to regulate the pH value of skincare products because it has an acidic pH. A lower pH can help support the skin's natural acid mantle and protect the skin against harmful bacteria.
Acne treatment: Lactic acid helps reduce the occurrence of acne. Its keratolytic effect prevents the buildup of dead skin cells, which can clog pores and cause acne.

Application in cosmetics

Lactic acid is used in a variety of skincare products, including:

Peels and masks: These products use the exfoliating properties of lactic acid to renew the skin's surface and achieve a more radiant complexion.
Moisturizers and serums: Lactic acid in these products helps to hydrate and smooth the skin.
Cleaning products: In cleaning agents, lactic acid supports the gentle removal of impurities and dead skin cells.
Acne treatments: Products specifically for acne-prone skin often contain lactic acid to reduce skin blemishes.

Common combinations

Lactic acid is often combined with other active ingredients to maximize its benefits:

Hyaluronic acid:This combination provides intense moisture and improves skin elasticity.
Niacinamide: Together with lactic acid, niacinamide helps to soothe the skin and even out the complexion.
Glycolic acid: Both AHAs together can provide more intensive exfoliation and skin renewal.
Salicylic acid: This combination is especially effective in the treatment of acne, as salicylic acid penetrates deep into the pores and lactic acid exfoliates the skin surface.

Safety and compatibility

Lactic acid is considered safe and well tolerated, but it can cause irritation in sensitive skin or at higher concentrations. It is important to introduce products with lactic acid slowly into the skincare routine and, if necessary, combine them with a soothing and moisturizing product. It is also recommended to use sunscreen during the day, as AHAs can make the skin more sensitive to light.

conclusion

Lactic acid is a versatile and effective ingredient in cosmetics, which impresses with its exfoliating and skin-renewing properties. It helps to improve skin texture, brighten the complexion, and reduce the appearance of fine lines, wrinkles, and blemishes. Due to its wide range of applications, lactic acid is a valued component in numerous skincare products.