How to Improve Skin Health & Appearance
Andrew Huberman, a Stanford Professor, discusses skin health, its connection to overall body systems, and actionable strategies for skin care. He covers sun exposure, sunscreens, anti-aging treatments like collagen and retinoids, and managing conditions like acne and rosacea through nutrition and lifestyle.
Deep Dive Analysis
19 Topic Outline
Skin Biology and Layered Structure
Sun Exposure, UV Light, and Skin Cancers
Aging, Sun Exposure, and Physical Barriers
Sunburn and Skin Cancer Risk
Vitamin D, Sun Exposure, and Hormone Production
Organic (Chemical) vs. Inorganic (Mineral-Based) Sunscreens
Skin Cancer Types, Moles, and Laser Resurfacing
Sun Avoidance, Melanoma, and Life Expectancy
Youthful Skin: Collagen and Vitamin C
Peptides: BPC-157 and Copper for Skin
Niacinamide, Hyaluronic Acid, and Dark Spots
Retinoids (Retinol, Tretinoin) for Youthful Skin
Phototherapy for Skin Health and Appearance
Nutrition for Skin Health: Anti-Inflammatory Diets
Highly Processed Foods and Advanced Glycation End Products
Reducing Inflammation: Gut Microbiome, Sleep, Alcohol, Stress
Acne: Hormonal and Dietary Causes, Cleansing
Treating Rosacea: Lifestyle, Skincare, and Laser
Psoriasis Treatment: Immune System and Prescriptions
7 Key Concepts
Epidermis
The outermost, superficial layer of the skin. This layer is primarily affected by short-wavelength light like UV, which can cause DNA mutations and accelerate aging.
Dermis
The layer of skin located beneath the epidermis. It contains blood vessels, capillaries, nerve endings, hair follicles, and various proteins like collagen and elastin, which contribute to skin elasticity and appearance.
Skin Microbiome
The community of microorganisms living on the surface of the skin. A healthy and varied skin microbiome acts as a barrier against infections and provides nourishing elements that contribute to vibrant skin.
Organic (Chemical) Sunscreens
Sunscreens that contain chemical compounds like oxybenzone or avobenzone. These chemicals work by absorbing UV light to prevent it from damaging skin cells, but some are a concern for potential endocrine disruption.
Inorganic (Mineral-Based) Sunscreens
Sunscreens that contain minerals like zinc oxide or titanium dioxide. These work by physically reflecting UV light away from the skin, and are generally considered safe up to 25% concentration.
Advanced Glycation End Products (AGEs)
Compounds formed when proteins or lipids combine with sugars, often exacerbated by high-heat cooking and present in highly processed foods. AGEs are pro-inflammatory and can accelerate skin aging and worsen conditions like acne and psoriasis.
Matrix Metalloproteases (MMPs)
Enzymes that can degrade the extracellular matrix of the skin. These are released when skin is mechanically disrupted, such as by popping pimples, and can lead to permanent indentation scars.
12 Questions Answered
Skin is a direct indicator of the health status of other organ systems, including the immune system, gut microbiome, and brain, with its appearance changing based on overall well-being.
Yes, excessive UV light from sun exposure can cause mutations in skin cell DNA, leading to certain types of skin cancers and accelerating the appearance of skin aging.
No, mineral-based sunscreens (zinc oxide, titanium dioxide) that reflect UV light are generally considered safer than chemical sunscreens (oxybenzone, avobenzone) which absorb UV light and have some concerns as potential endocrine disruptors.
Using physical barriers like clothing and hats is highly effective and undisputed, and for lotions, mineral-based sunscreens (zinc oxide/titanium dioxide) up to 25% concentration are recommended as safer options.
Studies suggest that people who completely avoid sun exposure may have a reduced life expectancy compared to those who get some sun, though this correlation is complex and linked to other health behaviors like exercise and mood.
Ingesting 15-30 grams of hydrolyzed collagen peptides daily, especially with vitamin C, and supplementing with 1 gram of niacinamide (vitamin B3) daily, can improve skin elasticity, reduce wrinkles, and balance oil production.
Red and near-infrared light phototherapy can penetrate deep into the skin, reducing reactive oxygen species, improving mitochondrial function, lowering inflammation, and enhancing blood flow, leading to improved skin appearance and wound healing.
Consuming a diet rich in non-processed or minimally processed whole foods, including omega fatty acids, leafy greens, folic acid, and vitamin A from food sources, while avoiding highly processed foods and excessive sugar, promotes skin health by reducing inflammation.
Adequate, consistent sleep and effective stress management significantly improve skin appearance and health by reducing inflammation, improving blood flow, and balancing hormone levels, while chronic stress and poor sleep exacerbate skin issues.
Acne is caused by a combination of hormonal influences (androgens), diet (high glycemic load, certain dairy), and inflammation, leading to sebum accumulation and keratinocyte proliferation; it can be managed by diet adjustments, stress reduction, proper sleep, and gentle cleansing.
Treating rosacea involves consuming a low-inflammation diet, getting enough sleep, minimizing or eliminating alcohol, using lukewarm water with gentle cleansers, applying mineral-based sunscreen, and using moisturizers to lock in hydration.
Psoriasis is an autoimmune condition characterized by an overactivation of the immune system, leading to itchy, scaly skin; it is effectively treated with prescription drugs that specifically target overactivated interleukins (e.g., IL-17, IL-23).
33 Actionable Insights
1. Prioritize Consistent, Quality Sleep
Get adequate and consistent sleep (6-9 hours) nightly to dramatically improve skin appearance, health, and vibrancy, as sleep deprivation negatively impacts skin.
2. Implement Stress Management Techniques
Actively manage stress through real-time tools like the physiological sigh and daily practices such as meditation or non-sleep deep rest (yoga nidra) to reduce cortisol and adrenaline, which otherwise cause vasoconstriction, reduced blood flow, and exacerbate skin issues like flushing and breakouts.
3. Prioritize Whole, Minimally Processed Foods
Base 75-100% of your diet on non-processed or minimally processed whole foods (fruits, vegetables, lean proteins) to reduce inflammation and avoid advanced glycation end products (AGEs) that accelerate skin aging and worsen conditions.
4. Cultivate a Healthy Gut Microbiome
Consume sufficient fiber from fruits and vegetables, and 1-4 servings daily of low-sugar fermented foods (e.g., kimchi, refrigerated sauerkraut/pickles) to reduce overall body inflammation, which positively impacts skin health and appearance.
5. Minimize or Eliminate Alcohol Consumption
Reduce or completely eliminate alcohol intake, as it is a pro-inflammatory agent that exacerbates most skin issues, causes puffiness, and negatively impacts sleep and the gut microbiome.
6. Avoid Nicotine Products
Refrain from smoking, vaping, dipping, snuffing, or using any other nicotine products, as nicotine is a vasoconstrictor that accelerates skin aging and increases inflammation, severely harming skin health and appearance.
7. Balance Sun Exposure for Health
Get some sun exposure for vitamin D, hormone production (testosterone, estrogen), and overall brain/body health, but avoid excessive exposure to prevent accelerated skin aging and certain skin cancers.
8. Avoid Sunburn
Prevent sunburn by any means possible (physical or chemical barriers) as it reflects excessive UV exposure, which increases the risk for certain skin cancers and accelerates skin aging.
9. Utilize Physical Sun Barriers
Wear physical barriers like shirts, hats, or jackets to protect skin from sunburn and accelerated aging, as these are universally accepted as safe and effective.
10. Choose Mineral-Based Sunscreen
Opt for mineral-based sunscreens containing zinc oxide and/or titanium dioxide (up to 25% concentration) as they are generally considered safe and reflect UV light, avoiding potential endocrine disruptor concerns of chemical sunscreens.
11. Monitor UV Index for Sun Safety
Check the UV index, especially between 10 AM and 4 PM when it’s typically highest, to determine when extra caution (physical or chemical barriers) is needed to protect skin.
12. Annual Dermatologist Skin Check
Get all of your skin, including moles, checked by a board-certified dermatologist at least once per year to protect against sun-induced and other forms of skin cancer.
13. Promptly Check Persistent Skin Lesions
If you have a pimple-like lesion or any spot on your skin that lasts more than a month, or an area that is seeping plasma, pus, or blood, get it checked by a dermatologist immediately.
14. Supplement with Hydrolyzed Collagen & Vitamin C
Ingest 15-30 grams of hydrolyzed collagen peptides daily, ideally with 500-1000 mg of Vitamin C, to improve skin elasticity, reduce wrinkles, and enhance overall youthful appearance over 3-6 months.
15. Supplement with Niacinamide for Skin Health
Take 500mg of niacinamide (Vitamin B3) twice daily, or use topical serums with 2-10% concentration, to increase skin moisture, reduce inflammation, balance oil production, and minimize hyperpigmented spots and large pores over 3-6 months.
16. Consult Dermatologist for Retinoid Treatment
If not pregnant or breastfeeding, discuss prescription retinoids (e.g., Tretinoin/Retin-A) with a dermatologist to stimulate collagen, improve vascularization, and induce new skin synthesis for a more youthful appearance, carefully managing light sensitivity and potential dryness.
17. Incorporate Red Light/Near-Infrared Phototherapy
Use red light and near-infrared phototherapy for 10-15 minutes, 5-7 days per week, at 1-2 feet distance, to reduce inflammation, improve mitochondrial function, enhance blood flow, and potentially improve skin’s youthful appearance and conditions like acne.
18. Practice Gentle, Regular Skin Cleansing
Cleanse skin 2-3 times daily with a gentle, unscented, unfragranced cleanser and lukewarm water, avoiding harsh cleansers or extreme water temperatures, to support the skin microbiome and prevent exacerbating acne.
19. Never Pop Pimples to Prevent Scarring
Avoid popping pimples at all costs, as it causes mechanical disruption and leads to permanent indentation scars due to matrix metalloproteases eating away at the extracellular matrix; instead, use corticosterone cream to reduce redness and swelling.
20. Manage Rosacea with Lifestyle & Gentle Care
Treat rosacea by consuming a low-inflammation, low-glycemic diet, ensuring adequate sleep, minimizing or eliminating alcohol, using lukewarm water with a gentle cleanser, applying mineral-based sunscreen, and regularly moisturizing with a gentle cream.
21. Consult Dermatologist for Psoriasis Treatment
For psoriasis, consult a dermatologist about prescription drugs that target specific interleukins (e.g., IL-17, IL-23), as these are highly effective in treating this immune system over-activation condition.
22. Shower Promptly After Workouts
Take a shower and cleanse with a gentle cleanser as soon as possible after workouts or sweating to remove bacteria and prevent skin issues, especially acne.
23. Consider Laser Resurfacing for Cancer Prevention
Discuss laser resurfacing with a dermatologist to disrupt and regenerate the epidermal layer, which can reduce the incidence of certain skin cancers by up to 30% and improve skin’s youthful appearance.
24. Optimize Diet with Key Skin Nutrients
Ensure adequate intake of omega fatty acids (from fish, nuts, seeds), dark leafy greens, folic acid, and Vitamin A (from food sources like carrots, sweet potatoes, and berries) to support DNA repair, collagen synthesis, and overall skin health.
25. Use Hyaluronic Acid for Skin Moisture
Apply topical hyaluronic acid or use products containing it to act as a humectant, helping to lock in moisture and give skin a plump, smooth, and youthful appearance.
26. Avoid Rosacea Triggers
Steer clear of strong astringents, excessively hot or spicy foods, and anything that acts as a strong vasodilator, as these can irritate the skin and exacerbate rosacea.
27. Experiment with Dairy & Whey Intake for Acne
If experiencing acne, consider reducing or experimenting with eliminating dairy (especially non-fat/low-fat due to emulsifiers) and whey protein intake, as these can sometimes exacerbate acne by spiking insulin.
28. Avoid Chemical Sunscreen on Young Children
Do not use chemical-based sunscreens on children younger than six months of age, as their skin can easily absorb substances transdermally.
29. Get Morning Sunlight for Circadian Rhythm
Expose eyes to low solar angle sunlight early in the day (when UV index is very low) to set circadian rhythm, which improves mood, focus, alertness, and sleep, positively impacting overall health and lifespan.
30. Consume Collagen-Rich Foods
Include collagen-rich foods like bone broth in your diet to naturally support collagen synthesis and skin rejuvenation.
31. Ensure Adequate Dietary Copper Intake
Make sure your diet includes sufficient trace mineral copper, which is key for DNA repair, collagen synthesis, and reducing reactive oxygen species in the skin, but avoid excessive supplementation.
32. Use Salicylic Acid for Acne (If Recommended)
If recommended by a dermatologist, apply topical salicylic acid to clean skin to reduce keratinocyte stickiness, prevent pore clogging, and decrease swelling associated with acne.
33. Support Skin Microbiome with Cleansing Choices
Wash skin with certain substances and avoid others to support the skin microbiome, which acts as a barrier to infections and nourishes the skin.
4 Key Quotes
Our skin is an incredibly important organ, not just for our appearance or because it serves as a barrier to the other organ systems of the body, but because it actually reflects the health status of all the other organs and systems in our body, including our brain.
Andrew Huberman
non-smokers who avoided sun exposure had a life expectancy similar to smokers in the highest sun exposure group.
Andrew Huberman
If you have a pimple-like lesion or you have any kind of spot on your skin that seems like it's an acne that's lasted more than a month, or you have an area that's seeping something that might look like plasma or pus or blood and it persists over a long period of time like a month or more, absolutely get that checked out by a dermatologist.
Andrew Huberman
Don't pop your pimples because A, they will go away in not too much time if you leave them alone, and B, you can always put a little bit of corticosterone cream on top of them to reduce the redness or swelling, but most importantly, they tell me that when you pop those pimples what ends up happening is you get a mechanical, a physical disruption of that area which to you might just seem like okay whatever it turns a little bit red and that's transient, but you get the influx of what are called matrix metalloproteases... that then and go eat at the extracellular matrix and then you can get an indentation scar that is permanent.
Andrew Huberman
4 Protocols
General Skin Protection from Sun
Andrew Huberman- Get some daily sun exposure, especially early and late in the day, for hormone production and circadian rhythm setting.
- Avoid excessive midday sun exposure, particularly when the UV index is high.
- Use physical barriers like shirts, hats, and jackets to protect skin from sun.
- Apply mineral-based sunscreens containing zinc oxide and/or titanium dioxide (up to 25% concentration) when chemical sunscreens are a concern.
Routine for Youthful Skin Appearance
Andrew Huberman- Ingest 15-30 grams of hydrolyzed collagen peptides daily, potentially with vitamin C.
- Supplement with 500 milligrams of niacinamide twice daily (total 1 gram/day) for 3-6 months or more.
- Consider topical niacinamide ointments/serums at 2-10% concentration.
- Use products containing hyaluronic acid to help lock in skin moisture.
- Consult a dermatologist about prescription retinoids (e.g., tretinoin) or over-the-counter retinoid esters, being aware of light sensitivity and avoiding use if pregnant or breastfeeding.
General Acne Management
Andrew Huberman- Adopt a low-inflammation, low-glycemic load diet, avoiding highly processed foods, excessive sugar, and potentially reducing dairy (especially low-fat) and whey protein.
- Ensure adequate sleep and manage stress effectively.
- Support gut microbiome health with fiber and 1-4 servings of low-sugar fermented foods daily.
- Cleanse skin gently 2-3 times daily with lukewarm water and an unscented, unfragranced mild cleanser (e.g., Dove bar soap, Cetaphil).
- Avoid popping pimples to prevent permanent scarring caused by matrix metalloproteases.
- Apply salicylic acid products on clean skin if recommended by a dermatologist to reduce keratinocyte stickiness and swelling.
- For redness/swelling, a small amount of corticosterone cream can be applied topically, or a dermatologist can inject a corticosteroid for severe cases.
Rosacea Management
Andrew Huberman- Consume a low-inflammation, low-glycemic load diet.
- Ensure adequate sleep and manage stress.
- Reduce or eliminate alcohol intake, as it is often a culprit in exacerbating rosacea.
- Use lukewarm water and a gentle, unfragranced cleanser for skin care.
- Regularly use a quality mineral-based sunscreen (SPF 30) to prevent sun damage and inflammation.
- Apply a gentle moisturizer (e.g., containing hyaluronic acid) to lock in skin moisture.
- Consider topical or oral niacinamide (nicotinamide) supplementation.
- Avoid spicy foods and strong astringents that can irritate the skin or increase heat.
- For very stubborn rosacea or visible broken blood vessels, consult a dermatologist about pulsed dye laser treatment.