If you are new to chemical exfoliation, the names AHA, BHA and LHA can feel confusing. They sound like lab terms, not skincare. But once you understand what each one does, choosing the right product becomes simple.
Quick answer: AHA works on the surface of your skin to improve tone and texture. BHA (salicylic acid) goes inside the pore to clear oil and reduce breakouts. LHA is a gentler, slow-acting form of BHA, best for beginners and sensitive skin. Start with one acid, use it two to three times a week, and always wear sunscreen the next day.
This guide explains each acid in simple words, covers how to build a full routine, how to avoid over-exfoliating, and which real AccuFix products fit each need.
What is Chemical Exfoliation, Really?
Your skin naturally sheds dead cells all the time. This is called cell turnover. When you are younger, this happens roughly every 3 to 4 weeks. As you get older, or if your skin is oily and congested, dead cells can build up faster than they shed. This buildup is what causes rough texture, dullness, clogged pores, and blackheads.
Chemical exfoliation uses a mild acid to loosen the "glue" that holds dead skin cells together, so they shed more evenly. This is different from a physical scrub, which removes dead skin by rubbing it off with grains or beads.
Why chemical is usually gentler than physical:
- Scrubs can create tiny tears in the skin, especially on active acne or sensitive skin
- Chemical exfoliants work evenly across the skin, not just where you scrub harder
- The strength can be controlled through concentration and pH, so results are more predictable
In Pakistan's hot, humid climate, skin tends to produce more oil and sweat, which mixes with dead skin cells and clogs pores faster. This is one reason gentle, regular chemical exfoliation is often more useful here than an aggressive once-a-month scrub.
Why Molecule Size Matters (The Part Most Guides Skip)
Not all acids behave the same way, even within the same family. The size of the acid molecule decides how deep it goes into your skin.
- Smaller molecules (like glycolic acid) penetrate faster and deeper. This means quicker visible results, but also a higher chance of irritation if you use it too often, too soon.
- Larger molecules (like lactic acid, and LHA) penetrate more slowly. This means gentler action, a lower risk of irritation, and a formula that is easier to build tolerance with.
This single idea explains almost every difference you will read about between acids — including why LHA feels gentler than regular salicylic acid, even though both come from the same acid family.
AHA (Alpha Hydroxy Acid): For Texture and Tone
AHAs are water-soluble. This means they work mainly on the surface of your skin, loosening the bond between dead cells so they shed evenly.
What AHA helps with:
- Rough or uneven texture
- Dull-looking skin
- Uneven tone from sun exposure or old acne marks
The two AHAs you will see most often:
- Glycolic acid — smallest molecule, works fastest, best for normal or resilient skin that wants visible texture and tone improvement.
- Lactic acid — larger molecule, gentler, better for dry or reactive skin, and often used in body care formulas because it is easier to tolerate.
For best results, AHA products work best in a formula with a pH between 3 and 4. This is a formulation detail, not something you need to test at home — just know that a well-made AHA product is designed around this range.
Best for: Normal, dry, and combination skin types. Also helpful for dullness, rough patches, and mild post-acne discolouration.
Realistic timeline: Most people notice smoother, brighter-looking skin within 1 to 3 weeks of consistent use.
Try this: AccuFix's Glycolic Acid Toner is a simple way to add AHA to your routine. Apply to dry skin 2 to 3 times a week, avoiding any broken or irritated areas, and always follow with sunscreen the next morning.
BHA (Beta Hydroxy Acid / Salicylic Acid): For Oily and Acne-Prone Skin
BHA is oil-soluble. This is the key difference from AHA — it can travel through the oil sitting inside a pore, not just sit on the surface.
What BHA helps with:
- Excess oil and clogged pores
- Blackheads and whiteheads
- Breakouts, congestion, and acne-prone skin
- Fungal acne, in some formulations, because salicylic acid also has anti-inflammatory and mild antimicrobial action
Salicylic acid is the most common BHA, and it is the ingredient AccuFix started with. It remains one of the most trusted actives for problematic, acne-prone skin.
Best for: Oily, acne-prone, and congested skin.
Realistic timeline: Existing blemishes usually start calming within 2 to 4 weeks, with a gradual drop in new breakouts as pores stay clearer.
Try this: AccuFix's Salicylic Acid Serum combines 1.5% salicylic acid with glycolic acid to unclog pores and support smoother-looking skin, including for fungal acne. Because salicylic acid increases sun sensitivity, always follow with a broad-spectrum SPF 30 or higher the next day.
LHA (Lipohydroxy Acid): The Gentle Beginner-Friendly BHA
LHA often gets marketed as if it's a completely different acid family. It is not. LHA is a derivative of salicylic acid — so it is technically still a BHA, just built differently.
Why LHA feels gentler: LHA has a larger, more fat-soluble molecular structure than regular salicylic acid. This means it penetrates the skin more slowly — almost cell-by-cell instead of all at once. The result is a similar pore-clearing action, with a much lower risk of the redness, flaking, or "purging" phase that stronger acids can cause.
What LHA helps with:
- Clearing pores and improving skin clarity
- Smoothing rough texture
- Brightening the look of post-acne marks
- Supporting acne-prone skin that reacts badly to stronger actives
Best for: Beginners, sensitive skin, and anyone who found salicylic acid too strong on its own.
Try this: AccuFix's Glass Skin Refiner uses LHA along with Potassium Azeloyl Diglycinate (PAD) and niacinamide. The LHA in this formula works up to 8 times slower than regular salicylic acid, so purging is rare — most beginners notice smoother skin without a rough breakout phase. Sensitive skin can start 3 to 4 times a week and build up to daily use as tolerance improves.
AHA vs BHA vs LHA: Full Comparison
| AHA (Glycolic Acid) | BHA (Salicylic Acid) | LHA | |
| Solubility | Water-soluble | Oil-soluble | Oil-soluble, slow-release |
| Works where | Surface of skin | Inside the pore | Inside the pore, gently |
| Best for | Texture, tone, dullness | Oily, acne-prone skin | Beginners, sensitive, acne-prone skin |
| Beginner frequency | 2–3x/week | 2–3x/week | 3–4x/week, build to daily |
| Purging risk | Low | Moderate | Very low |
| When to use | PM | PM (or as directed) | AM or PM |
| Sunscreen needed | Yes, always | Yes, always | Yes, always |
Which Acid Should You Choose? A Quick Decision Guide
- Main concern is dullness or rough texture, skin is not very sensitive → Start with AHA (Glycolic Acid Toner)
- Main concern is oily skin, blackheads, or active breakouts → Start with BHA (Salicylic Acid Serum)
- Skin is sensitive, reactive, or new to any acid at all → Start with LHA (Glass Skin Refiner)
- Main concern is on the body — back acne, strawberry skin, rough patches → Start with AHA/BHA Body Wash
- You tried salicylic acid before and it left your skin red or flaky → Switch to LHA instead of stopping exfoliation altogether
Can You Use AHA, BHA and LHA Together?
Not on day one. If you are new to chemical exfoliation, using several acids together can overwhelm your skin barrier and cause redness, dryness, or peeling.
The safer approach: introduce one acid at a time. Give it two to three weeks before judging results or adding anything new. Once your skin has built tolerance, you can:
- Alternate AHA and BHA on different nights, rather than layering them together
- Pair either acid with niacinamide, which helps calm redness, refine pores, and support the skin barrier while the acid works
- Use a combined, lower-strength product like AccuFix's AHA/BHA Body Wash, which balances both actives in one gentle daily step instead of layering separate strong products
Try this: AccuFix's AHA/BHA Body Wash combines 0.5% salicylic acid with lactic acid — a lower-strength duo built for daily use on the body. It helps with body acne, back acne, strawberry skin (keratosis pilaris), and rough or discoloured patches, without needing to layer separate acids.
How to Start Chemical Exfoliation as a Beginner
- Patch test first. Apply a small amount on your inner arm or jaw and wait 24 hours before using it on your full face.
- Pick one acid to start. Do not begin with three actives at once, and do not combine a new acid with retinol in your first month.
- Start slow. Use it two to three times a week, not daily, even if the label says daily use is fine.
- Apply to clean, dry skin. Damp skin can absorb more product than expected, increasing irritation risk.
- Watch your skin. Mild tingling for a few seconds is normal. Sharp burning, heavy redness, or visible peeling is not — stop and reduce frequency.
- Always follow with sunscreen the next morning. Chemical exfoliants make skin more sensitive to the sun, and skipping SPF can undo your results by causing new dark marks.
- Increase gradually. Once your skin tolerates it well for two to three weeks, you can slowly move to every other day, then daily if the product allows.
- Give it time. Most people see early results in 1 to 4 weeks depending on the acid and concern. Skincare works on skin's own renewal cycle — it is not instant.
Signs You're Over-Exfoliating (and How to Recover)
Common signs your skin barrier is stressed:
- Skin feels tight, stings, or burns even without product on it
- Redness that does not calm down between uses
- Flaking, peeling, or a rough, sandpaper feeling
- Breakouts that suddenly get worse instead of better
- Skin looks shiny and "raw" rather than healthy and glowing
If this happens:
- Stop all acids immediately, including cleansers with acids in them
- Simplify your routine to a gentle cleanser, a basic moisturiser, and sunscreen only
- Let your skin recover fully — this can take one to two weeks
- Only reintroduce one acid, at a lower starting frequency, once irritation is completely gone for at least a week
- Do not add a second acid until the first one is well tolerated
Healing an over-exfoliated barrier is about patience, not adding more products.
Building a Simple Beginner Routine
Morning:
- Gentle cleanser
- Moisturiser
- Broad-spectrum sunscreen SPF 30 or higher
Evening (on acid nights, 2–3x a week to start):
- Gentle cleanser
- Your chosen acid (Glycolic Acid Toner, Salicylic Acid Serum, or Glass Skin Refiner)
- Moisturiser
Evening (on non-acid nights):
- Gentle cleanser
- Moisturiser
Keep the rest of your routine simple while your skin adjusts. This is not the time to also introduce retinol, vitamin C, or a new fragrance-heavy product.
Common Mistakes Beginners Make
- Over-exfoliating. More is not faster. It usually means more irritation, not better results.
- Mixing too many actives too soon. Layering AHA, BHA and retinol together as a beginner is a common cause of a damaged skin barrier.
- Skipping sunscreen. This is the most common mistake, and the one most likely to undo your results — especially for pigmentation-prone skin.
- Using acids on broken or irritated skin. Wait until your skin barrier is calm before starting.
- Judging results too early. Give any acid at least 2 to 3 weeks before deciding if it's working.
- Assuming daily use is always better. Some formulas are built for daily use, but beginners should still start slower than the label suggests.
FAQs
Is LHA the same as BHA?
LHA is a type of BHA. It comes from salicylic acid but is built to release more slowly, which is why it feels gentler on skin.
Can I use salicylic acid and glycolic acid on the same day?
As a beginner, it is safer to use them on separate days. Once your skin builds tolerance, some people can use both, spaced apart, without irritation.
Which is better for acne — AHA or BHA?
BHA (salicylic acid) is generally better suited for acne and oily skin because it works inside the pore. AHA is better for texture and tone.
Is LHA safe for sensitive skin?
Yes, LHA is often recommended for sensitive or beginner skin because of its slow-release action, though everyone's skin reacts differently. Always patch test first.
How often should beginners exfoliate?
Two to three times a week is a safe starting point for AHA and BHA. LHA can often start a little more often, around three to four times a week, because of its gentler release.
Do I need to stop chemical exfoliation in Pakistan's hot weather?
No, but sunscreen becomes even more important. Heat and sun exposure combined with acid use can increase the risk of dark marks if SPF is skipped.
Can I use a chemical exfoliant on my body, not just my face?
Yes. Body skin is often thicker but still benefits from gentle exfoliation, especially for back acne, strawberry skin (keratosis pilaris), and rough patches. A lower-strength combined product, like an AHA/BHA body wash, is usually the easiest way to start.
What should I do if my skin reacts badly to an acid?
Stop using it, simplify your routine to a gentle cleanser and moisturiser, and let your skin recover for one to two weeks before trying a gentler option, such as LHA, at a lower frequency.
The Simple Way to Start
Chemical exfoliation does not need to be complicated. Pick one acid that matches your main concern, start slow, and give your skin time to adjust. If you are unsure where to begin, a gentle option like the Glass Skin Refiner (LHA) or a balanced AHA/BHA Body Wash is often the easiest first step. Explore this acne page as well.
Still unsure which one fits your skin? Use the live chat on our site, or start with our Acne Starter Bundle, built for beginners and mild acne.