Now You see why I envy You Thinner, not thin, mine is thin... And yes unfortunately hair grows only to certain length-my case mid-back. If there is any win about mine, it's soft and I can wash it every third day, or so.
Welcome the recipe goes like that- to half of glass of hot water add 2-3 spoons of gelatine/agar and stir till it's fully dissolved. Leave it untill it coagulates to gel form, then put it on combed hair and leave it for 30 min or so (preferably put your hair into a bag, or wrap with old towel). Wash as usually. For results wait till fully dry. It's called lamination, as far as I remember.