Melatonin FAQs
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5 questions
FAQs
- Is melatonin better as a supplement or applied to the scalp? No study has compared oral and topical melatonin head to head. Topical melatonin has one small placebo-controlled pilot trial in 40 women plus a set of mostly uncontrolled studies of a cosmetic solution; oral melatonin has no published hair-loss trial at all.
- Melatonin: Does it work the same for men and women? No trial has compared melatonin's effect on hair in men versus women. The only placebo-controlled scalp study enrolled 40 women, and the single reported sex difference — shedding fell in women but not men — comes from one uncontrolled 60-person observation, so any difference is unestablished.
- Does melatonin only prevent hair loss or also help it grow new hair? Melatonin may help prevent hair loss and stimulate new hair growth.
- Melatonin: Can it be combined with other treatments like minoxidil or Redensyl? No published trial has tested melatonin together with minoxidil or Redensyl, and no interaction study exists — so the combination is untested rather than shown to be safe. The melatonin scalp evidence on its own is one small placebo-controlled trial plus several uncontrolled studies.
- Can melatonin cause side effects on the skin or hair? Melatonin may cause hair loss or thinning in some users, but evidence is limited.