Chemical exfoliation uses acids to dissolve the bonds between dead skin cells, allowing them to shed naturally. Unlike physical scrubs which physically buff cells away with particles, chemical exfoliants are gentle, even, and don't cause the micro-tears that aggressive scrubs can. 🔬
The result: smoother texture, brighter skin, clearer pores, and better absorption of other skincare products. Used consistently, chemical exfoliation is one of the most effective tools for long-term skin improvement.
🍊 AHA — Alpha Hydroxy Acids (Work on Skin Surface)
AHAs are water-soluble and work on the outer layer of skin. The two most common:
Glycolic Acid
The smallest AHA molecule — penetrates most effectively. Great for brightening dull skin, improving texture, fading surface dark spots, and early anti-ageing. Best concentrations for home use: 5–10%. Can cause sun sensitivity — always follow with SPF. 🌟
Lactic Acid
Larger molecule than glycolic acid — gentler and more hydrating. Ideal for sensitive or dry skin types who find glycolic too strong. Also very effective for brightening and smoothing. 5–10% for regular use. 💧
💚 BHA — Beta Hydroxy Acids (Work Inside Pores)
BHAs are oil-soluble — they penetrate INTO the pore through the sebum inside it. This makes them ideal for oily, congested, acne-prone skin where the problem is inside the pore.
Salicylic Acid
The primary BHA. Dissolves sebum plugs inside pores, reduces blackheads, controls oil, and prevents acne. Home-use concentrations: 0.5–2%. Available in face wash, toner, or serum format. 🧴
⚖️ AHA vs BHA — Which Do You Need?
Oily, congested, breakout-prone skin → Start with BHA (salicylic acid). Dull, uneven, dry, or age-concerned skin → Start with AHA (glycolic or lactic). Both concerns → Use BHA in the morning (or in your face wash) and AHA at night (2–3x per week). 🎯
🗓️ How Often to Use
Beginners: once a week. Experienced users: 2–3 times per week (AHAs). BHA in face wash: daily is fine at low concentrations. Never use strong AHA and BHA on the same application — this can cause over-exfoliation. ⚠️
☀️ Critical: Use SPF After AHA
AHAs temporarily increase your skin's sensitivity to UV. Always wear SPF 50 in the morning if you use AHAs in your routine. This is not optional — it's the rule for all AHA users. ☀️
🎯 Getting Started
If you've never used chemical exfoliation: start with a 5% lactic acid toner twice a week. After 4 weeks increase to 3 times a week. After 8 weeks, consider adding glycolic acid or a BHA. Build slowly. Your skin will improve dramatically with consistent, patient use. 💪