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For Skin •Supplement with grass-fed or pastured collagen protein—at least 10 grams per day. It’s available in unflavored protein powder, smoothie mix, ready-to-drink collagen Bulletproof Coffee, and collagen protein bars. You can also make bone broth if you don’t like collagen protein. •Eat more foods containing polyphenols and antioxidants: vegetables, coffee, tea, and chocolate. You can get skin benefits from vitamin C by eating vitamin C–rich foods, taking a vitamin C supplement, and/or applying a vitamin C serum topically. •There is good science behind the skin benefits of cryotherapy, microneedling, and products containing retinol, copper peptides, and methylene blue. •As you read earlier, red and yellow light therapy both have profound skin and hair benefits. See chapter 5 for a refresher. If you have significant skin damage or scarring, look into laser resurfacing.
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Dave Asprey (Super Human: The Bulletproof Plan to Age Backward and Maybe Even Live Forever)