Lactic Acid vs Glycolic Acid Which One Is Gentler for Your Skin

When it comes to skincare, understanding acids can feel overwhelming. Among the most popular alpha hydroxy acids (AHAs) are lactic acid and glycolic acid. Both are well-known for their exfoliating benefits and ability to enhance skin texture. However, they are quite different in terms of gentleness and effectiveness. In this post, we will explore lactic acid and glycolic acid, guiding you on which one may be gentler for your skin.

Understanding Lactic Acid

Lactic acid comes from milk and is celebrated for its moisturizing properties. It has a larger molecular structure compared to glycolic acid, allowing it to penetrate the skin at a slower pace. This slower absorption means that lactic acid tends to be a gentler choice, particularly for those with sensitive skin.

Not only does lactic acid exfoliate the skin, but it also helps maintain hydration. For example, studies show that lactic acid can boost skin hydration levels by up to 32%. This makes it an excellent option for dry or dehydrated skin types. By promoting cell turnover, it uncovers a brighter and more even complexion without the irritation that can sometimes arise from stronger acids.

A bottle of lactic acid serum on a wooden surface

Exploring Glycolic Acid

Glycolic acid, sourced from sugar cane, boasts a smaller molecular size. This allows it to quickly penetrate deeper layers of the skin, making it a potent exfoliant. Although glycolic acid can yield impressive results, it may also cause irritation, particularly for individuals with sensitive skin.

Glycolic acid is frequently recommended for oily and acne-prone skin because it effectively unclogs pores and diminishes breakouts. For example, a study found that 10% glycolic acid can reduce acne lesions by 50% over eight weeks. However, its strength can lead to redness and peeling for those who are new to using acid-based products.

A bottle of glycolic acid toner on a marble countertop

Comparing the Two Acids

Exfoliation Power

Lactic acid and glycolic acid both function as effective exfoliants, but their approaches differ. Lactic acid delivers a gentler exfoliation suitable for sensitive skin. It not only removes dead skin cells but also provides hydration, making it a well-rounded option.

Glycolic acid, due to its smaller molecular structure, offers a more intense exfoliation. While this can be ideal for those seeking quick results, it might not be the best for everyone, especially those with reactive skin.

Hydration vs. Irritation

Lactic acid stands out for its dual-action benefits. It exfoliates while drawing moisture into the skin. This feature makes it especially appealing to those with dry or mature skin.

In contrast, glycolic acid may lead to dryness or irritation if overused. It's crucial to follow up with a quality moisturizer after applying glycolic acid to help counteract any potential dryness.

Skin Types and Concerns

When considering lactic acid or glycolic acid, keep your skin type and concerns in mind:

• Lactic Acid: This acid is best for sensitive, dry, or mature skin. It is also a great starting point for those new to acids, ensuring gentle exfoliation without overwhelming the skin.

  
  

• Glycolic Acid: This option suits oily, acne-prone, or thickened skin. If you're looking for a strong exfoliation effect and have previous experience with acids, glycolic acid may fit your needs.

  
  

How to Use Them in Your Skincare Routine

Lactic Acid

To incorporate lactic acid, start with a lower concentration of 5-10%. Use it 1-2 times a week, gradually increasing the frequency as your skin becomes accustomed. Look for serums or toners with lactic acid and be sure to apply a moisturizer afterward to keep your skin hydrated.

Glycolic Acid

For glycolic acid, also begin with a lower concentration of 5-10%. Monitor your skin's reaction, using it 1-2 times weekly to start. Glycolic acid is commonly found in toners, serums, and peels, so select a product that aligns with your skincare routine. Always apply sunscreen during the day, as AHAs can increase skin sensitivity to the sun.

A collection of skincare products including lactic and glycolic acid

What's Your Skincare Spice Level: Lactic vs. Glycolic?

Choosing between lactic and glycolic acid is like choosing your spice level: are you feeling mild or extra hot? Both are amazing exfoliants that can enhance your skincare routine, but they deliver a different kind of kick.

At Snack.co, we think of lactic acid as the gentle, hydrating choice—perfect if your skin is on the sensitive side. Glycolic acid brings the heat with a stronger, more intense exfoliation for a major glow-up. The secret is finding the 'flavor' that your skin loves! Always play it smart by patch testing, and don't hesitate to consult a pro if you're unsure. With the right approach, you'll be serving up your most radiant skin ever!