How to Improve Skin Health & Appearance

Andrew Huberman covers the skin as a living organ tightly linked to the immune system, gut microbiome, and hormones. He walks through the structure of skin, then tackles the sunscreen controversy, comparing mineral (zinc oxide/titanium dioxide) versus chemical sunscreens and which are safest. He reviews evidence-backed ways to improve skin youthfulness, including hydrolyzed collagen with vitamin C, niacinamide, hyaluronic acid, retinoids, and red light phototherapy, while flagging more experimental peptides like BPC-157. He closes with nutrition, gut health, lifestyle factors (sleep, alcohol, nicotine, stress), and specific guidance for acne, rosacea, and psoriasis.

• A dermatologic oncologist tells Huberman the skin cancers that sun exposure causes are generally NOT the most deadly; some of the deadliest melanomas are independent of sun exposure.
  00:24:20
• Huberman pushes back on online claims that he doesn't believe in sunscreen, saying that is false and he has worn sunscreen his whole life.
  00:36:47
• Laser resurfacing can cause roughly a 30% reduction in certain skin cancers by rejuvenating the epidermal layer.
  00:52:24
• He reframes the famous Swedish study: non-smokers who avoided sun had life expectancy similar to smokers in the highest-sun group, but says the popular 'sun = longevity' conclusion is confounded.
  00:56:35
• Admits there is essentially no good human evidence for BPC-157 and says he cannot in good conscience recommend BPC-157 skin products.
  01:14:39
• Dermatologists told him people can start retinoids in their 20s and reported 'remarkable results' for skin youthfulness.
  01:28:39
• Counterintuitive: nonfat and low-fat dairy can spike insulin MORE than full-fat dairy due to emulsifiers, potentially worsening acne.
  02:05:58
• Dermatologists 'practically begged' him to tell listeners not to pop pimples because it can cause permanent indentation scarring.
  02:09:35

• Mineral sunscreens with zinc oxide or titanium dioxide are generally considered safe up to 25% concentration; zinc reflects UV while chemical sunscreens absorb it.
  00:38:53
• Chemical sunscreens should be avoided on children under 6 months because young skin absorbs substances transdermally much like mucosal tissue.
  00:41:32
• Eating collagen appears to be a rare exception where ingesting a protein selectively benefits the same tissue (skin), unlike, e.g., eating liver for your liver.
  01:08:55
• Suggested collagen dosing is about 15-30 grams of collagen peptides per day, ideally with 500-1,000 mg vitamin C.
  01:11:03
• Niacinamide at 500 mg twice daily (1 g/day) can boost ceramide production, but effects take 3-6 months to appear.
  01:21:53
• Red light plus near-infrared phototherapy, about 1-2 feet away for 10-15 minutes, 5-7 days a week, shows mild-to-moderate improvements in skin youthfulness.
  01:37:58
• The teenage 'fried food causes breakouts' warning is essentially true, largely via inflammation and insulin response from high-heat processed foods.
  01:51:54
• Huberman recommends 1-4 servings of low-sugar fermented foods (refrigerated kimchi, sauerkraut, pickles) per day for gut and skin health.
  01:53:28
• Acne affects 80-90% of young people, and about 10% of people worldwide have acne at any given moment.
  02:00:14
• For over 80 years psoriasis was thought to be simple skin-cell overproduction; it's now understood as immune-driven, treatable with drugs targeting interleukin-17 and interleukin-23.
  02:21:33