Tea tree oil

Also known as Melaleuca alternifolia

BEVIDENCE

The clean-up crew for skin the razor just opened up.

The honest take

Genuinely useful and genuinely overhyped — both can be true. Diluted properly it keeps shaved skin looking clean; neat and overused it just irritates. Respect the dilution and it earns its spot.

What it is

An essential oil from the Australian tea tree, long used on blemish-prone and freshly-shaved skin.

How it works

Contains terpinen-4-ol, a compound with well-documented antimicrobial and clarifying activity on the skin's surface.

What it does

Helps keep post-shave and body skin looking clear and feeling fresh, especially where the razor and sweat conspire.

Who it's for

Body-shavers and anyone whose chest, back or beard line breaks out under friction.

How to use it

Use as formulated in a gel or cream over shaved or blemish-prone zones. Never apply undiluted essential oil to skin.

What to expect

Cleaner-looking post-shave skin; fewer of the little congested spots friction leaves behind.

The research

Terpinen-4-ol is well-studied for antimicrobial and anti-inflammatory activity; strongest evidence is for blemish-prone skin at proper dilution.

Read the labelExternal use only; keep away from eyes. Undiluted oil irritates — patch-test. Not a treatment for acne or infection; see a professional for those.

Evidence grades describe how well an ingredient is studied — A well-supported, C emerging — not a promise of results. Educational, not medical advice. Doses are typical ranges; follow the label on the product.