Acids, exfoliants & chemical peels
A structured clinical approach to alpha-hydroxy, beta-hydroxy and polyhydroxy acids, plus azelaic acid — from the biology of desquamation through to concentration thresholds, scope of practice, and safe combining principles.
4 units
~8 min each
12 checkpoints
Level: Beauty therapist to registered practitioner
TGA compliant
Your progress
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Unit 1
Chemical exfoliation & the biology
The three acid families, how desquamation actually works at an enzyme level, and why concentration alone never tells you how active a product is.
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Unit 2
Alpha-hydroxy acids
Glycolic, lactic and mandelic acid compared by molecular size, penetration and tolerability — and matched to skin type and Fitzpatrick phototype.
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Unit 3
BHAs & PHAs
Why lipid solubility puts salicylic acid where AHAs cannot reach, and why gluconolactone and lactobionic acid are the acids of choice for sensitive and recovering skin.
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Unit 4
Azelaic acid, thresholds & combining
Azelaic acid's three-in-one mechanism, TGA concentration thresholds and scope of practice, and the acid combination guide with the full condition matrix.
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Each unit follows the same rhythm: a short piece of clinical content, a checkpoint that asks you to commit to an answer, then the reasoning behind it. Checkpoints are not scored and cannot be retried — committing to a position before seeing the answer is the point of the exercise. Your progress is stored on this device only.