Lactic acid is a common ingredient in skincare, known for its exfoliating and hydrating properties. Rosacea is a chronic skin condition marked by facial redness, visible blood vessels, and sensitivity. Individuals with rosacea often question lactic acid’s safety for their skin, due to its potential for irritation and flare-ups. This concern arises from rosacea-prone skin’s inherent sensitivity and a compromised skin barrier.
Lactic Acid in Skincare
Lactic acid is an alpha hydroxy acid (AHA) derived from fermented milk. It functions as a chemical exfoliant, working on the skin’s surface by gently dissolving the bonds between dead skin cells. This sheds the outermost layer of dead skin, revealing a smoother, brighter complexion.
Beyond its exfoliating action, lactic acid also acts as a humectant, meaning it attracts and retains moisture. This makes it a versatile ingredient. It is considered one of the milder AHAs due to its larger molecular size, which limits its deep penetration into the skin.
Lactic Acid and Rosacea
For rosacea sufferers, lactic acid presents both potential benefits and significant risks. Rosacea-prone skin often has a diminished skin barrier, leading to dryness and heightened sensitivity. Gentle exfoliation from lactic acid might help address texture concerns or flakiness accompanying rosacea.
Lactic acid’s humectant properties could also offer hydration to dry, rosacea-prone skin, potentially improving barrier function. However, despite its milder nature compared to other AHAs like glycolic acid, lactic acid can still induce irritation or redness in sensitive skin. The compromised skin barrier in rosacea means that even gentle exfoliants can potentially trigger flare-ups, making its use complex.
Safe Use for Rosacea-Prone Skin
If considering lactic acid for rosacea-prone skin, a cautious approach is recommended. Begin with very low concentrations, around 5% or less, as higher percentages can increase the risk of irritation. Always perform a patch test on a small, discreet area of skin, and observe for adverse reactions over 24 to 48 hours before applying to the face.
Introduce the product slowly, perhaps once a week, and gradually increase frequency if your skin tolerates it well. Pay close attention to the product’s formulation, opting for soothing and hydrating ingredients, and avoiding formulations with other known rosacea triggers like alcohol or fragrance. It is also important to use sunscreen daily when incorporating any AHA, as they can increase sun sensitivity.
Consulting a Professional
Given the sensitivity and unpredictable nature of rosacea, consulting a dermatologist or healthcare provider is advisable before introducing new skincare ingredients. A professional can help determine if lactic acid is appropriate for your specific rosacea subtype. They can provide personalized guidance, especially if your rosacea is severe, if self-treatment leads to increased irritation, or if symptoms do not improve. This ensures a responsible approach to managing rosacea and maintaining skin health.