TL;DR — Quick Answer
AHAs (like Glycolic Acid) work on the skin surface to brighten, smooth, and fade dark spots. BHAs (like Salicylic Acid) penetrate deep into pores to clear congestion, control oil, and fight acne. For oily and acne-prone Indian skin, a combination of both AHA + BHA gives the best results.
What Is Chemical Exfoliation?
Chemical exfoliation uses acids to dissolve the bonds between dead skin cells, allowing them to shed naturally without physical scrubbing. Unlike harsh physical scrubs that can cause micro-tears, chemical exfoliants work gently and evenly across the skin surface.
There are two main categories of chemical exfoliants used in skincare:
- AHA (Alpha Hydroxy Acids) — water-soluble, work on the skin surface
- BHA (Beta Hydroxy Acids) — oil-soluble, penetrate deep into pores
What Are AHAs? (Alpha Hydroxy Acids)
AHAs are water-soluble acids derived from natural sources like sugarcane, milk, and fruit. They work by loosening the bonds between dead skin cells on the surface, revealing fresher, brighter skin underneath.
Most Common AHAs in Skincare:
- Glycolic Acid — smallest molecule, deepest penetration, most studied (from sugarcane)
- Lactic Acid — gentler, also hydrating (from milk)
- Mandelic Acid — gentlest AHA, ideal for sensitive and darker skin tones
- Citric Acid — mild brightening and antioxidant properties
What AHAs Do for Your Skin:
- Exfoliate dead skin cells from the surface
- Brighten dull, uneven skin tone
- Fade post-acne marks and hyperpigmentation (PIH)
- Smooth fine lines and rough texture
- Improve absorption of other skincare products
Best for: Dry skin, dull skin, hyperpigmentation, uneven skin tone, anti-aging
What Are BHAs? (Beta Hydroxy Acids)
BHAs are oil-soluble acids, which means they can penetrate through the sebum (oil) in your pores and exfoliate from within. The most well-known BHA is Salicylic Acid, derived from willow bark.
Most Common BHA in Skincare:
- Salicylic Acid — the gold standard BHA for acne-prone and oily skin
What BHAs Do for Your Skin:
- Penetrate deep into pores to dissolve oil and debris
- Unclog blackheads and whiteheads
- Reduce excess sebum production
- Fight acne-causing bacteria
- Reduce inflammation and redness
- Prevent future breakouts
Best for: Oily skin, acne-prone skin, blackheads, enlarged pores, congested skin
AHA vs BHA — Key Differences
| Feature | AHA | BHA |
|---|---|---|
| Solubility | Water-soluble | Oil-soluble |
| Where it works | Skin surface | Inside pores |
| Best for | Dull, dry, pigmented skin | Oily, acne-prone, congested skin |
| Key ingredient | Glycolic, Lactic, Mandelic Acid | Salicylic Acid |
| Main benefit | Brightening, smoothing, anti-aging | Pore clearing, oil control, anti-acne |
| Sensitivity | Moderate — can cause photosensitivity | Lower — anti-inflammatory |
| Indian skin suitability | Good — use with SPF | Excellent — especially for oily skin |
Which Exfoliant Is Right for Indian Skin?
Indian skin is naturally more prone to PIH (Post-Inflammatory Hyperpigmentation) — the dark marks left behind after acne, sun exposure, or irritation. This makes choosing the right exfoliant especially important.
- Oily + acne-prone skin — Start with BHA (Salicylic Acid). Add AHA once skin is stable.
- Dry + dull skin — Start with a gentle AHA (Lactic or Mandelic Acid).
- Combination skin — Use AHA on dry areas, BHA on the T-zone.
- Sensitive skin — Start with Mandelic Acid (gentlest AHA) 1-2x per week.
- Dark spots + acne — Combination AHA + BHA product gives best results.
Important: Always use SPF 30+ during the day when using any chemical exfoliant. AHAs in particular increase photosensitivity.
Can You Use AHA and BHA Together?
Yes — and for most Indian skin types dealing with both pigmentation and acne, a combination product is ideal. Using both together means you get surface brightening (AHA) and deep pore clearing (BHA) in a single step.
Best AHA + BHA Product for Indian Skin (2026)
BMJ NEO Foaming Facewash — 3-in-1 AHA + BHA + Kojic Acid Cleanser
BMJ NEO is a professional-grade foaming facewash that combines three powerful actives in one formula:
- Glycolic Acid (AHA) — exfoliates dead skin cells, brightens and smooths skin tone
- Salicylic Acid (BHA) — penetrates pores, controls oil, fights acne-causing bacteria
- Kojic Acid — fades dark spots and post-acne marks (PIH)
This triple-action formula is specifically designed for oily and acne-prone skin, delivering deep pore cleansing without stripping essential moisture. Free from parabens, sulphates, and silicones.
- Lifts away dead skin cells
- Unclogs pores and removes excess sebum
- Promotes a clearer, more even skin tone
- Leaves skin fresh, smooth, and revitalized
Best for: Oily, acne-prone skin with dark spots and uneven tone
How to Add Chemical Exfoliation to Your Routine
- Start slow — 2-3 times per week maximum when beginning
- Cleanse first — apply exfoliant to clean, dry skin
- Wait — allow 10-15 minutes before applying other products
- Moisturise — always follow with a good moisturiser
- SPF is non-negotiable — use SPF 30+ every morning without fail
- Do not combine with retinol on the same night when starting out
-
Common Mistakes to Avoid
- Over-exfoliating — more is not better; 2-3x per week is sufficient
- Skipping SPF — AHAs make skin more sun-sensitive
- Using on broken or irritated skin — always patch test first
- Combining too many actives at once — introduce one new product at a time
Frequently Asked Questions
Can I use AHA and BHA every day?
No — start with 2-3 times per week and increase gradually based on your skin's tolerance. Daily use can cause irritation and over-exfoliation.
Which is better for dark spots — AHA or BHA?
AHA (especially Glycolic Acid) is more effective for surface pigmentation and dark spots. However, if your dark spots are caused by acne, treating the acne with BHA first will prevent new marks from forming.
Can I use chemical exfoliants during monsoon season?
Yes — but be extra careful with SPF as UV exposure is still significant during monsoon in India. Humidity can also make skin more reactive, so start with lower frequency.
Is Salicylic Acid safe for Indian skin?
Yes — Salicylic Acid is one of the most recommended ingredients for Indian skin due to its anti-inflammatory properties and effectiveness against acne and oily skin without causing significant photosensitivity.
At what age should I start using chemical exfoliants?
Chemical exfoliants are generally suitable from age 16+ for acne-prone skin (BHA) and from age 20+ for anti-aging purposes (AHA). Always consult a dermatologist if unsure.
Also Read
- How to Get Rid of Back and Body Acne — Complete Guide 2026
- 5 Most Searched Skincare Ingredients for Fading Dark Spots Safely
- Niacinamide — The Complete Skin Guide 2026
Disclaimer: The information provided in this article is for educational and informational purposes only. No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician. Always perform a patch test before using any new skincare product. If you experience any adverse reactions, discontinue use and consult a dermatologist. Individual results may vary.
