Biotin

Biotin, also known as vitamin B7, is a water-soluble B-complex vitamin found naturally in foods such as eggs, nuts, and whole grains. In skincare formulations, it functions as a skin conditioning agent and is occasionally used to address seborrhoeic concerns. The body requires biotin for keratin synthesis—the structural protein that forms hair, skin, and nails—though topical application works differently from oral supplementation.When used in skincare products, biotin is included at relatively low concentrations, appearing in approximately 1.8% of formulations. Its role in topical products …

Biotin is essential for the synthesis of keratin, a structural protein that comprises the outer layer of skin and the hair shaft. This function is primarily realised through oral supplementation, where biotin is absorbed and utilised systemically. In topical skincare, biotin works more modestly as a humectant and conditioning agent, helping to support the skin's surface hydration and integrity.The ingredient's antiseborrhoeic properties—its ability to help regulate sebum-related concerns—are less well characterised in skincare products, and its effectiveness in this capacity at topical conc…

Biotin in skincare products is most effective when used as part of a consistent routine rather than as a standalone solution. If you are interested in biotin's benefits for skin, hair, and nails, oral supplementation may be more efficacious than topical application alone. Topical biotin-containing products can be used daily as part of your regular skincare regimen without restriction, though results are likely to be modest and gradual.

Biotin is generally well-tolerated in both topical and oral forms. There are no widely documented adverse reactions to topical biotin at cosmetic concentrations, and it is suitable for most skin types.