Hair Care

Does biotin really work for hair? Dr. Susan Lin, M.D. explains how biotin supports keratin synthesis, why megadose biotin is misleading (and risks laboratory test interference), and how MD Nutri Hair™ delivers a calibrated biotin dose as part of a multi-pathway formulation — made in the USA in an FDA-registered facility.

Does marine collagen actually help hair growth? Dr. Susan Lin, M.D. explains the inside-out philosophy of MD Nutri Hair™ — physician-formulated Type I and Type III marine collagen from wild-caught Norwegian whitefish, biotin, lilac stem-cell extract, and flax seed lignans in a once-daily capsule, made in the USA in an FDA-registered facility, paired with the topical MD Hair™ Follicle Energizer for the outside-in plus inside-out protocol.