Skin Purging vs Breakout —
How They Differ

Purging is a speeding-up, not a new problem. Every spot begins weeks earlier as a micro-comedone, a plug too small to see. A retinoid quickens the shedding of cells inside the follicle, so plugs already on their way surface sooner and together. That is why retinol purging appears where you usually break out, and why each spot tends to clear faster than usual.

A product breakout is a fresh blockage: a heavy, occlusive texture causes spots in places that are normally clear. Moisturisers, sunscreens and make-up cannot purge, because they do not change cell turnover.

Irritation is a stressed barrier: dryness, flaking, tightness, stinging and redness wherever the product went, usually from too much, too soon.

Retinol and tretinoin work the same way. Retinol must be converted in the skin to retinoic acid, and only part of it is, so it is gentler. Tretinoin is retinoic acid itself, so the adjustment is usually more noticeable; it is prescription-only in Singapore, and whether it suits you is decided at a consultation (see tretinoin). Exfoliating acids can cause a milder purge for the same reason.

The rows describe a pattern on the skin, not a diagnosis. A mixed picture is common, and that is where an examination helps.

Purging belongs to the early weeks of regular use. There is no fixed timetable, but it should be clearly easing. Spots still multiplying after the first couple of months are not purging, and new breakouts past about eight weeks point towards irritation or a reaction to the formula.

Not everyone purges. People with little acne, or who start gently, often see none, and the retinoid is still working. Its benefit is judged over months, which is why acne treatment plans at Atelier are reviewed at 8–12 weeks rather than after the first flare.

A start date, how often you apply it and a weekly photograph in the same light beat memory.

• Fungal acne: small, uniform, itchy bumps on the forehead, chest or shoulders. Retinoids neither cause nor treat it; see fungal acne (Malassezia folliculitis).
• Perioral dermatitis: clusters of red bumps around the mouth, nose or eyes, with a narrow clear rim at the lip. Heavy creams and borrowed steroid creams are known triggers; see perioral dermatitis.
• Hormonal flares: spots that follow the menstrual cycle may be hormonal rather than product-related; see hormonal acne in adult women.
• Deep, tender lumps: retinoids do not cause cystic acne. Nodules that appear or worsen need a medical assessment because of the scarring risk; see cystic acne.
• Allergic contact dermatitis: uncommon, but an itchy, spreading rash from an ingredient is possible and is not something to push through.

1. One retinoid, modest strength, a few nights a week; add nights only while the skin stays comfortable.
2. A pea-sized amount for the whole face, at night, on fully dry skin, away from the nose corners, eyelids and lip margins.
3. A ceramide moisturiser before or after.
4. No strong exfoliating acids the same night, and one new active at a time, so a reaction can be traced.
5. Sunscreen every day: retinoids raise sun sensitivity and break down in light, and Singapore's UV is high all year.
6. Hands off. Squeezing drives inflammation deeper and raises the chance of post-inflammatory hyperpigmentation.
7. Tell any clinic about your retinoid before waxing or laser.

Retinoids are not used during pregnancy or while trying for a baby, and are usually stopped during breastfeeding unless your doctor says otherwise; see acne in pregnancy.