but retinal is slightly 'further along' the pathway to the form your skin uses than retinol. Retinal is closest to retinoic acid (which is what prescription retinol, tretinoin, is made up of ...
Topical retinoids (for example, tretinoin) and retinoid analogues (for example, adapalene and tazarotene) help normalize hyperkeratinization and have demonstrated significant anti-inflammatory ...
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