What does 5% glycolic acid do?

Author: Jewell Schuster  |  Last update: Sunday, November 9, 2025

Glycolic acid is a versatile skincare ingredient that can help to fade dark spots, reduce fine lines, and clear clogged pores. As an AHA, glycolic acid chemically exfoliates the skin and boosts collagen production. If you want to try an OTC glycolic cleanser, toner, serum, or peel, start slow and let your skin adjust.

Can I use 5% glycolic acid every day?

Yes. Glycolic acid is gentler than salicylic acid. Salicylic acid is not meant for daily use. Glycolic acid can absolutely be used daily. It's fine to alternate the two.

Is 5% glycolic acid too strong?

Concentrations between 5-10% of glycolic acid are considered most effective for exfoliation on a regular basis. There are also more intense, rinse-off glycolic acid peels featuring higher concentrations of AHAs, which you can use at home on an occasional basis, about once a week, to improve the look of deeper wrinkles.

What is glycolic acid 5 percent used for?

Experts use glycolic acid for oily skin or acne-prone skin treatment as well as correction of dry skin, dull complexions, sun-damaged skin, and mature skin. Glycolic acid was once used only on oily or acne-prone skin. Nowadays, it's recommended by dermatologists for all skin types, depending on the formula.

How long does it take for 5% glycolic acid to work?

To clear blackheads, glycolic acid can take 3-4 weeks to take effect for clearer, congestion-free skin. This is because it takes time and repeated use for glycolic acid to break down pore-blocking dead skin cells and debris for clearer skin that doesn't have any congestion.

Reviewing Glycolic Acid Skincare Hacks | Doctorly Explains

Will glycolic acid fade dark spots?

Glycolic acid is highly effective in reducing dark spots and treating hyperpigmentation. It works by promoting the shedding of pigmented cells and encouraging the growth of new, evenly pigmented skin cells. This process helps to lighten dark spots and improve the uniformity of the skin's tone.

How many layers of skin does glycolic acid remove?

The American Society for Dermatologic Study has confirmed that glycolic acid can be applied to the skin at two levels. In low or "superficial" amounts, this alpha-hydroxy acid penetrates only the outer layer of skin to gently exfoliate it and reveal the new, less damaged skin underneath.

What not to mix with glycolic acid?

What NOT to mix with Glycolic Acid. Retinol, other AHAs/BHAs, Vitamin C: Using these ingredients alongside Glycolic Acid in the same routine could irritate the skin. However, alternating them between your morning and evening skincare routine means that you can enjoy the benefits without the risk of damaging your skin.

How to know if glycolic acid is working?

Signs that glycolic acid is working include smoother skin texture, fewer breakouts, and a more even skin tone. Some people may also notice a light tingling sensation on application, which is normal.

What are the bad side effects of glycolic acid?

Glycolic acid side effects

Common side effects reported after the use of glycolic acid peels include reddening; a stinging sensation or sensation of pulling of facial skin; mild burning; and temporary post-inflammatory dark spots.

Can I leave glycolic acid on overnight?

Glycolic acid can be used on the face and let it absorbed into the skin by leaving it on all night. Rinse off with water the next day.

Do you moisturize after glycolic acid?

6. Always moisturize after use. Glycolic acid exfoliates and hydrates the skin, but it can irritate or dry out sensitive skin. Always follow your glycolic acid application with an additional light moisturizer to reduce the effects of dryness and irritation on the skin.

Can you use glycolic acid under eyes?

Glycolic Acid is your go-to for an eye cream, gentle yet effective to demolish dark circles.

What are the pros and cons of glycolic acid?

It is also useful in treatments for acne, hyperpigmentation, and the visible signs of aging. However, as with all chemical exfoliants, using glycolic acid too frequently, at too high a concentration, or incorrectly can result in skin irritation or damage.

Does glycolic acid lighten the pubic area?

Depending on the strength of the acid and how deep in the skin the peel can act, there are three types of chemical peels: light, medium, and deep peels. For lightening the intimate area, the peels usually applied are glycolic acid, citric acid, and kojic acid.

What does glycolic acid do for armpits?

Underarm deodorants work by either inhibiting the growth of these bacteria, or by halting perspiration altogether. Acids such as glycolic and salicylic work as effective natural deodorants. Their low pH makes it impossible for odor-causing bacteria to survive on your skin, leaving you feeling fresh and confident.

Does glycolic acid remove dark spots?

Glycolic acid is highly effective in reducing dark spots and treating hyperpigmentation. It works by promoting the shedding of pigmented cells and encouraging the growth of new, evenly pigmented skin cells. This process helps to lighten dark spots and improve the uniformity of the skin's tone.

How long will my skin purge from glycolic acid?

Skin purging is said to last 4-6 weeks, however, everyone's skin is different (2). This is only temporary and will eventually subside as your skin adjusts to the new treatment. In the meantime, it is important to cleanse gently and avoid picking at your skin, as this can cause further irritation.

Should glycolic acid be rinsed off?

The majority of products containing lower than 10% glycolic acid do not require rinsing unless the instructions state otherwise. If you're using a peel, mask or scrub, simply follow the instructions on the back of the product.

What cancels out glycolic acid?

Glycolic acid and niacinamide.

Indeed, niacinamide used with AHA's like glycolic acid and lactic acid has no effect and can even cause redness. Since niacinamide has a pH of about 5-7, it can actually increase the lower pH of glycolic acid, which is about 3-4, and negate its properties.

Which is better retinol or glycolic acid?

Clinically speaking, retinol lacks the penetrative strength of Retin-A and glycolic acid, as it remains inactive and fails to reach beyond the superficial layer of the skin. Conversely, glycolic acid has the ability to deeply penetrate the skin, breaking down the "glue" that holds together dead and dull skin cells.

What is the best pair for glycolic acid?

Glycolic acid and hyaluronic acid: Since hyaluronic acid loads up skin with moisture, it makes for an excellent pairing with glycolic acid. Look for a product that combines both for easiest application, though you can also layer serums.

What to expect when you start using glycolic acid?

Certain acids like glycolic are know to dry skin and may cause some redness when applied for the first time. This is common and in most cases goes away after a couple days.

What does glycolic acid do to hair?

It Can Reduce Breakage

Many people experience hair breakage, making it difficult to grow the hair thick and long. Glycolic acid can nourish and hydrate the hair, which, in turn, prevents tangling, making it easier to style the hair without it breaking off.

What percentage of glycolic acid do dermatologists use?

Glycolic acid is the alpha-hydroxy acid used most commonly by dermatologists for chemical peeling. It is used in concentrations from 20%–70% in all skin types. It should be used in lower concentrations initially, and then the strength of the peel should be gradually increased in subsequent sessions.

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