10 Acne Myths Your WhatsApp Aunt Taught You (Debunked)

Lemon juice? Toothpaste? Starving yourself of oil? Let's separate the dermatology facts from the kitchen-remedy fiction.

Family WhatsApp groups are a goldmine of skincare advice — most of which is wrong. Let's go through the ten claims we hear in clinic every week and what dermatology actually says.

Myth 1: Lemon juice fades dark spots

Lemon is intensely acidic (pH ~2) and photosensitising. Applied to skin, it can trigger phytophotodermatitis — a chemical burn that often leaves darker pigmentation than what you started with.

Myth 2: Toothpaste dries out pimples

Toothpaste contains menthol, fluoride and surfactants designed for tooth enamel — not skin. It causes irritant contact dermatitis. Use a 2% benzoyl peroxide spot treatment instead.

Myth 3: Cutting all oil from your diet stops acne

Dietary oil is not sebum. The evidence-based dietary triggers are high-glycaemic foods and (for some) skim dairy. Olive oil and ghee are not your enemy.

Myth 4: Acne means your face is dirty

Acne is hormonal and genetic. Over-washing strips the barrier and worsens the cycle. Cleanse twice daily with a gentle product — that's it.

Myth 5: Sunscreen causes acne

Old-formula sunscreens were heavy. Modern gel and fluid sunscreens are non-comedogenic and actively prevent post-acne pigmentation. Skipping SPF makes scars darker.

If your acne is persistent, painful or scarring — book a dermatology consultation. Topical retinoids and oral options exist that work, but only with proper supervision.