Comparison

Lactic Acid vs Glycolic Acid — Which Is Better?

Both Lactic Acid and Glycolic Acid are popular ingredients in professional skincare, but they work through different mechanisms and serve different purposes. This guide helps practitioners choose the right ingredient for each patient's needs.

Lactic Acid

Category: Exfoliant

Key Benefit: Gentle exfoliation with hydration

An AHA with humectant properties that exfoliates while increasing ceramide synthesis. Larger molecular size than glycolic acid provides gentler, more uniform exfoliation...

Glycolic Acid

Category: Exfoliant

Key Benefit: Surface exfoliation and renewal

The smallest alpha hydroxy acid (AHA) with superior penetration, dissolving the intercellular glue between corneocytes for effective chemical exfoliation...

Head-to-Head Comparison

Factor	Lactic Acid	Glycolic Acid
Category	Exfoliant	Exfoliant
Primary Benefit	Gentle exfoliation with hydration	Surface exfoliation and renewal
Best For	dull-skin, dehydration, sensitive-skin	dull-skin, hyperpigmentation, anti-aging

When to Use Lactic Acid

Lactic Acid is the better choice when treating patients who need gentle exfoliation with hydration. Its exfoliant properties make it particularly effective for dull-skin, dehydration, sensitive-skin.

When to Use Glycolic Acid

Glycolic Acid is preferable when the primary goal is surface exfoliation and renewal. As a exfoliant ingredient, it excels at addressing dull-skin, hyperpigmentation, anti-aging.

Can You Combine Lactic Acid and Glycolic Acid?

In many professional protocols, lactic acid and glycolic acid can be used together for complementary benefits. Consult Skymedic's clinical protocols for recommended combination guidelines.

Professional Verdict

The choice between Lactic Acid and Glycolic Acid depends on the patient's primary concern and skin type. Many practitioners incorporate both into their treatment repertoire for different patient needs.

Ingredient