Topical and oral products have different routes of use, ingredients and evidence questions. The better choice depends on the concern, the product and the person—not the strength of the marketing language.
Beauty supplements commonly promise support for hair, skin or nails, yet the evidence for a finished formula may be much thinner than the marketing suggests. Start with the exact claim and the full label.
A nail supplement label may highlight one vitamin or botanical while the actual formula contains several active ingredients. The label should be read as a complete formula, not a single promise.
Skin-ageing marketing often blends cosmetic language, biological terms and before-and-after imagery. A careful reader separates a product claim from evidence about a specific outcome in a specific group of people.
Biotin is the default hair supplement, and the evidence only supports it in a situation most people taking it are not in. It also interferes with medical blood tests.
