What’s the difference between buffered and unbuffered glycolic acid?
Glycolic acid is a popular ingredient in skincare, known for its exfoliating properties. The terms “buffered” and “unbuffered” refer to the formulation of glycolic acid ingredient, impacting their strength and how they interact with the skin.
- Buffered Glycolic Acid:
- Lower Acidity: Buffered glycolic acid has a higher pH level compared to its unbuffered counterpart. This means its acidity is reduced.
- Gentler on Skin: Due to its reduced acidity, buffered glycolic acid is typically gentler on the skin. This makes it suitable for those with sensitive skin or for use in products intended for frequent use.
- Less Irritation: It is less likely to cause irritation, redness, or peeling, which can be common with stronger acid treatments.
- Gradual Results: Buffered glycolic acid may provide more gradual results in terms of exfoliation and skin renewal because it works more slowly.
- Unbuffered Glycolic Acid:
- Higher Acidity: Unbuffered glycolic acid maintains its original low pH level, making it more acidic.
- More Potent Exfoliation: Due to its higher acidity, it is more effective at penetrating and exfoliating the skin. This can lead to more immediate results in terms of skin texture and brightness.
- Increased Risk of Irritation: The higher potency also means there is a greater risk of skin irritation, redness, and peeling, especially for those with sensitive skin or those not accustomed to acidic skincare products.
- Use with Caution: Products with unbuffered glycolic acid are often recommended to be used less frequently, and users are advised to gradually introduce them into their skincare routine to assess tolerance.
It’s important to choose a product based on your skin type, sensitivity, and the desired results. It’s also advisable to use sunscreen regularly when using products containing glycolic acid, as they can make the skin more sensitive to the sun.
