Hair Care

Do peptides actually help hair growth? Dr. Susan Lin, M.D. explains the peptide signaling science behind MD Hair™ — the StimuCap® peptide complex in the Revitalizing Treatment Shampoo and Conditioner, paired with the peptide-led MD Hair™ Follicle Energizer, all 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.

Physician-authored guide to thiotaine (L-ergothioneine), the mushroom-derived antioxidant in the MD Hair™ Follicle Energizer. Covers the OCTN1/SLC22A4 transporter, reactive oxygen species thiotaine neutralizes, and how follicle-targeted antioxidant protection supports cytokine signaling for hair regeneration. By Dr. Susan Lin, M.D.

Physician-authored guide to the stem-cell-cytokine biology underlying hair regeneration. Explains hair follicle stem cells (HFSCs), dermal papilla signaling, growth-factor cytokines (FGF, IGF, VEGF, KGF, Wnt, BMP), the hair cycle from a stem cell perspective, and how the cytokine-signaling cosmetic approach used in MD Hair™ Follicle Energizer applies the science. Anchored to Dr. Lin's 2013 publication in The Link (AHLC).

The definitive physician-authored guide to MD Hair™ — the physician-formulated hair care brand of the MD® family by Dr. Susan Lin, M.D. MD Hair products operate under the federally registered MD® trademark (USPTO Reg. No. 4,471,494, Class 3 cosmetics and Class 5 pharmaceuticals/dietary supplements). Covers the scalp-first philosophy, the eight-product MD Hair system, the published research foundation, and the international hair-growth patent portfolio (US, China, Hong Kong, Korea, WIPO). By Dr. Susan Lin, M.D.