Hyaluronic acid in shampoo penetrated hair well, reduced frizz, and improved hair strength and moisture.
42 citations
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December 2018 in “International Journal of Phytocosmetics and Natural Ingredients” Olive and Brazil nut oils improve hair strength, shine, and softness better than silicone.
33 citations
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July 2007 in “Skin research and technology” Thicker hair is stronger, regardless of age, gender, or other factors.
29 citations
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December 2011 in “British Journal of Dermatology” A new hair treatment with caffeine and other ingredients makes hair thicker and less likely to break.
2 citations
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August 2019 in “International Journal of Cosmetic Science” Older age and certain lifestyles are linked to thinner, weaker hair, while how you see your hair relates to its thickness.