10 Foods That Boost Your Body's Keratin Level: Keratin is a type of structural protein found in your hair, skin, and nails.

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Eggs: Eating eggs is a stellar way to boost keratin production naturally. Eggs are a great source of biotin, an essential nutrient involved in keratin synthesis. 

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Onions: Onions ramping up keratin production. This allium vegetable is especially high in N-acetylcysteine.

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Salmon: Salmon is an excellent source of biotin that supports keratin production.

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Sweet potatoes: Sweet potatoes are highly nutritious and great for promoting keratin production. 

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Sunflower seeds: Sunflower seeds are a great source of both biotin and protein to support keratin production.

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Mangoes: Mangoes are high in several  nutrients for skin and hair health, such as vitamin C and folate. 

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Garlic: Garlic boasts plenty of N-acetylcysteine, which your body turns into L-cysteine — an amino acid found in keratin. 

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Kale: Kale is a good source of provitamin A to support keratin synthesis.

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Carrots: Carrots loaded with vitamin C, which promotes collagen synthesis to support hair, skin, and nail health.  

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