AHA vs BHA: Which Exfoliating Toner Should You Actually Use?

Walk down any skincare aisle and you'll see the same two letters everywhere: AHA, BHA. Brands assume you know what they mean. Most people don't. Here's the deal in plain English.

AHA = surface glow

Alpha-hydroxy acids (glycolic, lactic, mandelic) work on the outermost layer of your skin. They dissolve the "glue" between dead skin cells so they slough off — revealing fresher, smoother, more reflective skin underneath.

Use AHA if you want: brighter tone, smoother texture, fading of dark spots and post-acne marks.

BHA = inside-the-pore cleanup

Beta-hydroxy acid (salicylic acid) is oil-soluble. It dives down into your pores and dissolves the gunk that turns into blackheads and whiteheads.

Use BHA if you have: clogged pores, blackheads, breakouts, oily skin.

The cheat code: combine both

Most people don't fit neatly into one category. You probably have texture and clogged pores, dullness and breakouts. The shortcut is a low-percentage combo toner used 2–3 times a week.

That's exactly what the PetalGlow AHA + BHA Exfoliating Glow Toner is — glycolic acid for the surface, salicylic for the pores, niacinamide to even tone, and hyaluronic acid so it doesn't dry you out.

How to actually use an exfoliating toner (without screwing it up)

1. Use it at night, after cleansing
2. Apply to a cotton pad and sweep across face — avoid eye area
3. Don't rinse — let it absorb fully
4. Always follow with moisturizer, and SPF every morning after

Mistakes that wreck your skin:

• Using it daily right out of the gate (start 2x/week, build up)
• Stacking it with retinol the same night (alternate them)
• Skipping SPF the next morning (exfoliation = sun-sensitive skin)

Bottom line

AHA = surface, BHA = pores. If you want both, get a combo toner with niacinamide and hyaluronic to keep it gentle. Use it at night, follow with moisturizer, wear SPF.