The journal

Guides to retinoids, pigmentation and building a routine that suits your skin.

Latest

Tretinoin vs Retinol: How the Ingredients Differ

Tretinoin vs retinol: tretinoin is retinoic acid; skin converts retinol first. Compare the evidence, UK status and safety questions.

Journal

Tretinoin under eyes may soften fine lines, though the delicate skin can become dry or sore. See what the evidence says and when to seek…

Journal

A tretinoin purge describes a temporary increase in spots where acne already appears. Trial evidence has not established that tretinoin…

Journal

Tretinoin for stretch marks may improve early red marks. Evidence for older white marks is limited. See what trials found and when to avoid…

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Tretinoin before and after changes take weeks or months to assess. Acne studies measure lesions over 8 to 12 weeks, while photoageing…

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Tretinoin and minoxidil may help some people with pattern hair loss, but evidence is limited and scalp formulas use different strengths…

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Tretinoin and hydroquinone can be prescribed together for melasma or dark marks, usually for a defined course. The steroid in triple creams…

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Azelaic acid before and after: trial timelines for acne and rosacea, plus what studies report about pigmentation and irritation.

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Azelaic acid and tretinoin may be prescribed in one routine. Many people use azelaic acid in the morning and tretinoin at night, following…

Journal

Adapalene vs tretinoin: compare the acne and photoageing evidence, irritation, UK prescription status and safety limits before discussing…