This is actually a common thing done in India (not that i live there but my parents are from there). Sometimes we add yogurt (whole milk! Not the wimpy skim stuff), coconut milk, and I almost ALWAYS add henna, which I buy in India when I go.  Actually, people in India will go so far as to shave their baby gi87;#r21l&s hair and put this on her head every day. Needless to say these kids have awesome hair.But I aint doin’ that to my daughter any time soon. And if I can make a wild guess, neither will you.