Brazil nuts are rich in selenium, which can stimulate hair growth. But limit intake to 4 nuts a day to avoid brittleness or hair loss. Cashews are full of healthy fats like monounsaturated and ...

A 28-gram serving of walnuts contains about 2.5 grams of omega-3s, along with ample copper and selenium, two minerals that help maintain hair colour and texture. Walnuts also contain polyphenolic ...