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Lactic acid is celebrated for its exfoliating properties that target the outer layers of the skin. This active ingredient is classified as an alpha-hydroxy acid (AHA) and works to eliminate dead skin cells from the epidermis, resulting in a smoother, more radiant, and even complexion. Here’s everything you need to know about lactic acid.
Lactic acid, a chemical exfoliant derived from the fermentation of lactose (a carbohydrate in milk), is naturally present in the skin, produced by beneficial bacteria within the skin’s microbiome. It is categorized as a post-biotic and can also be found in certain foods, including sugar cane and wine, imparting a characteristic sour taste associated with fermentation.
The use of lactic acid in cosmetics dates back to ancient Egypt, where Cleopatra famously bathed in donkey milk rich in this AHA to achieve soft skin. AHA compounds, being water-soluble organic acids, are recognized for their skin-rejuvenating properties by promoting cell renewal.
In skincare formulations, lactic acid can be sourced from either synthetic or plant origins. At Typology, the lactic acid used in our gentle peeling serum is obtained through the fermentation of corn sugar with specific bacteria, such as Lactobacillus.
When applied topically, lactic acid provides a multitude of benefits:
In cosmetic formulations, lactic acid also acts as a pH regulator, ensuring a slightly acidic environment suitable for the epidermis.
Lactic acid is primarily employed in dandruff treatments, alleviating itching and controlling oily dandruff. It helps maintain a healthy scalp by preventing hair follicle blockage. Additionally, its moisturizing properties aid in preventing hair fiber dryness and split ends.
Lactic acid is considered gentle compared to other AHAs, making it suitable for sensitive skin types seeking mild exfoliation. Due to its larger molecular size, it penetrates less deeply into the skin, resulting in reduced irritation compared to glycolic acid. This makes it an excellent alternative for those who may not tolerate glycolic acid well.
However, lactic acid can still cause side effects, such as increased sensitivity to sunlight and potential irritation, which may present as itching, burning, or redness. Consequently, European regulations recommend a maximum concentration of 10% for lactic acid in cosmetic products.
Because it increases photosensitivity, it's advisable to apply lactic acid in the evening and use a broad-spectrum sunscreen during the day and in the following days. Always conduct a patch test before incorporating a lactic acid product into your routine; apply a few drops to the inner arm or back of the hand and wait 24 hours. If any reaction occurs, refrain from using the product on your face.
Important Note: Avoid lactic acid treatments if you are currently using retinoid-based products.
Lactic acid is celebrated for its exfoliating properties that target the outer layers of the skin. This active ingredient is classified as an alpha-hydroxy acid (AHA) and works to eliminate dead skin cells from the epidermis, resulting in a smoother, more radiant, and even complexion. Here’s everything you need to know about lactic acid.
Red algae, alternatively termed Rhodophytes or red seaweed, comprise multicellular marine algae. Within skincare, this component is renowned for its capacity to hydrate and enhance skin plumpness.
For numerous years, hyaluronic acid has dominated the realm of anti-wrinkle ingredients. It's advocated for both youthful skin seeking hydration and mature skin aiming to enhance the appearance of the epidermis. However, its widespread use has inevitably led to controversy and misconceptions. Are these assertions accurate? Let's unravel some skincare truths and myths.
When applied topically, retinol undergoes metabolism into retinoic acid, the active form of vitamin A. It boasts exceptional keratolytic properties, making it an excellent option for clearing pores and preventing blemishes. Additionally, it is widely lauded for its effectiveness in addressing wrinkles resulting from photoaging of the skin
