St.Botanica smoothening pro keratin and argan hair serum for shiny, frizz and tangle free hair I've personally been using this serum for the past year and nothing beats this serum my hair used to be very frizzy and rough but somebody suggested me to use this serum and ever since then my hair became less frizzy and more tangle free I'm still using this hair serum and it's literally the best so i decided to stock up on this serum but i realised i ordered too many so decided to sell it at a low price and it's a luxury brand just to let you know you can search it up