AHAs + PHAs

AHAs + PHAs: Gentle Exfoliation for Smoother, Brighter-Looking Skin

AHAs and PHAs help loosen and remove dead skin cells from the surface of your skin, revealing skin that looks smoother, brighter, and more even. AHAs provide more noticeable exfoliation, while PHAs tend to be gentler and can be a good option for skin that doesn’t tolerate aggressive exfoliation well.

The goal isn’t to scrub your skin into submission.

It’s to remove excess buildup without leaving your skin feeling stripped, tight, or irritated.

What Are AHAs?

AHA stands for alpha hydroxy acid.

AHAs are water-soluble acids that work primarily on the surface of the skin, helping loosen the bonds between dead skin cells so they can be shed more easily.

They’re commonly used to improve the appearance of:

• Dullness
• Uneven texture
• Rough-feeling skin
• Uneven-looking tone
• Fine lines
• Post-breakout marks

Common AHAs include glycolic acid, lactic acid, and mandelic acid.

Different AHAs have different characteristics, so the type and concentration matter, especially if your skin is sensitive or easily irritated.

What Are PHAs?

PHA stands for polyhydroxy acid.

PHAs also exfoliate the surface of the skin, but their larger molecular structures generally mean they penetrate the skin more slowly than many AHAs.

That can make them a gentler exfoliating option for people who find stronger acids uncomfortable.

PHAs can help improve the appearance of texture and dullness while also providing humectant properties that help support hydrated-feeling skin.

Common PHAs include gluconolactone and lactobionic acid.

AHA vs. PHA: What’s the Difference?

Both can exfoliate. The main difference is how they tend to behave on the skin.

AHAs: More intensive surface exfoliation and often a better choice when you’re targeting noticeable texture, dullness, or uneven-looking tone.

PHAs: Gentler exfoliation that may be better tolerated by dry, sensitive, or reactive skin.

Neither is automatically better.

The right choice depends on your skin and how much exfoliation it actually needs.

Can You Use AHAs and PHAs Together?

Yes, depending on the formulation.

Some products are specifically formulated with multiple exfoliating acids to provide different levels or types of surface exfoliation.

But combining multiple exfoliating products on your own isn’t necessarily better.

If you’re already using an AHA product, adding another acid treatment, scrub, exfoliating cleanser, and retinoid all at once can be a quick way to make your skin very unhappy.

More exfoliation does not equal better skin.

How Often Should You Use AHAs and PHAs?

Start slowly.

For many people, one or two nights per week is enough to begin. If your skin tolerates the product well, you may gradually increase frequency according to the product’s directions.

Some people can tolerate exfoliating more often. Others need less.

Your skin’s response matters more than following a rigid schedule.

Signs you’re overdoing exfoliation can include:

• Burning or stinging
• Persistent redness
• Tightness
• Peeling
• Increased sensitivity
• Skin that suddenly feels unusually dry or uncomfortable

If that happens, back off.

Are AHAs Good for Mature Skin?

They can be.

As skin matures, cell turnover can slow, which can contribute to a duller appearance and rougher-feeling texture.

Gentle exfoliation can help remove accumulated dead skin cells and reveal smoother-looking skin underneath.

But mature skin can also become drier and more sensitive.

That’s why gentle, intentional exfoliation is usually a better approach than aggressive exfoliation.

You don’t need to peel your face to get a glow.

Are AHAs Safe for Sensitive Skin?

Sensitive skin doesn’t automatically mean you can never use AHAs or PHAs.

It does mean you should be more cautious.

PHAs may be a better starting point for some people who find stronger acids irritating. If you’re trying an AHA, consider starting with a lower-frequency routine and avoiding the temptation to stack multiple exfoliating products.

Always follow the instructions for the specific formula you’re using.

And if your skin is already irritated or your barrier is compromised, exfoliation may not be what it needs right now.

Barrier support comes first.

Can AHAs Help With Dark Spots?

AHAs can help improve the appearance of uneven skin tone by exfoliating surface cells and encouraging a brighter-looking complexion, but dark spots can have many causes, and exfoliation isn’t a complete treatment for every type of pigmentation.

If you’re concerned about hyperpigmentation, think beyond exfoliation.

Daily broad-spectrum SPF is essential, because UV exposure can make pigmentation more noticeable and harder to manage.

Can AHAs Help With Texture?

Yes.

Because AHAs help remove dead cells from the surface of the skin, they can make rough or uneven-looking texture appear smoother with consistent use.

This is one of the reasons exfoliating acids are so popular.

The trick is finding the point where your skin looks smoother without becoming irritated.

Can AHAs Help With Bumps?

Exfoliating acids can help with certain types of surface congestion and rough texture by helping shed dead skin cells.

But not every bump is caused by the same thing.

If you’re dealing with persistent bumps, irritation, acne, or a rash-like texture, increasing exfoliation isn’t necessarily the answer.

Sometimes the smartest skincare move is knowing when not to exfoliate.

AHAs + PHAs and Your Skin Barrier

This is the part that gets left out of a lot of exfoliation advice.

Healthy-looking skin isn’t just about removing things.

It’s also about keeping the barrier supported.

Over-exfoliating can leave skin feeling dry, tight, irritated, and more sensitive.

That’s why an exfoliation routine should be balanced with hydrating and barrier-supporting skincare.

Think:

Exfoliate → replenish → protect.

Not:

Exfoliate → exfoliate → exfoliate because apparently we’re angry at our face.

What Should You Use After an AHA or PHA?

Keep the rest of your routine simple.

After exfoliating, reach for products that focus on hydration and barrier support rather than immediately piling on more strong actives.

Ingredients commonly used to support comfortable, hydrated-looking skin include:

• Ceramides
• Hyaluronic acid
• Niacinamide
• Centella asiatica
• Other moisturizing and skin-conditioning ingredients

A moisturizer can be especially helpful after exfoliation.

Can You Use AHAs With Retinol?

You can potentially use both in the same overall routine, but using them at the same time isn’t necessarily the best idea, especially if your skin is sensitive.

Both retinoids and exfoliating acids can increase irritation when introduced too aggressively.

If you’re using a retinoid or retinol alternative, consider alternating nights rather than automatically layering everything together.

Your skin doesn’t get extra credit for surviving five actives at once.

Should You Use AHAs or PHAs in the Morning?

Either can technically be used depending on the product, but many people prefer exfoliating acids at night.

If you use AHAs or PHAs, daily sunscreen becomes even more important because exfoliation can make skin more sensitive to the sun.

Follow the specific product’s directions and don’t skip SPF during the day.

A Simple Exfoliation Routine

You don’t need a complicated acid schedule.

1. Cleanse

Start with a gentle cleanser and avoid scrubbing your skin aggressively.

2. Exfoliate

Apply your AHA or PHA product according to its directions. Start with a low frequency if you’re new to acids.

3. Hydrate and support

Follow with a hydrating serum or barrier-supporting moisturizer.

4. Protect

The next morning, use broad-spectrum SPF.

And remember: consistency beats intensity.

AHAs + PHAs for a Better-Looking Glow

Exfoliation can be one of the simplest ways to improve the look of dull, rough, uneven skin, but the best exfoliation routine is the one your skin can tolerate.

You don’t need to chase that “freshly peeled” feeling.

You want skin that looks smooth, comfortable, hydrated, and naturally radiant.

The Glóavia Approach

At Glóavia, we believe skincare should work with your skin, not against it.

That’s especially important as skin changes with age.

Our approach is barrier-first, ingredient-conscious, and designed around thoughtful rituals rather than an endless rotation of aggressive treatments.