Hello there,<p>My name is Hien Nguyen and I am a co-founder and the chief scientist at Function of Beauty. Our hair goals are a proprietary blend of selected performance ingredients; each ingredient has been through rigorous clinical testing from reputable cosmetic ingredient suppliers. Black oat is used to &quot;fix split ends&quot;, sweet almond extract deep conditions, beet root extract has high performance moisture, and tamarind fruit extract fights frizz.  The extracts contain either amino acids, protein, essential fatty acids, or polysaccharides (and more!) which give its beneficial hair goal properties. I hope this helps answer your question and also in choosing your personalized hair care set.