Vital Proteins
Vital Proteins Collagen Peptides Powder
Oral collagen studies generally show modest improvements in skin elasticity and hydration after around 8-12 weeks of consistent daily use — a slower, more gradual effect than topical actives.
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Adaptogens like ashwagandha are studied for moderating cortisol response — relevant to skin since chronic stress hormones are linked to increased breakouts in some people.
Best for those whose skin concerns (particularly breakouts) seem to correlate with periods of high stress, wanting to address the underlying stress response rather than only the resulting skin symptom.
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Moon Juice SuperYou Daily Stress Management from Moon Juice is a well-rounded option for those seeking those whose skin concerns (particularly breakouts) seem to correlate with periods of high stress, wanting to address the underlying stress response rather than only the resulting skin symptom. The inclusion of Ashwagandha provides adaptogenic herb studied for cortisol moderation. Best suited for those whose skin concerns (particularly breakouts) seem to correlate with periods of high stress, wanting to address the underlying stress response rather than only the resulting skin symptom.
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Vital Proteins
Oral collagen studies generally show modest improvements in skin elasticity and hydration after around 8-12 weeks of consistent daily use — a slower, more gradual effect than topical actives.

NeoCell
Type 1 and 3 collagen specifically are the types most studied for skin — worth checking the label, since not all collagen supplements specify which type they contain.

Sports Research
Biotin supplementation mainly helps people who are actually deficient — most people eating a varied diet already get sufficient biotin and won't see dramatic hair or nail changes from supplementing further.