GIRLS WITH THIN AND/OR FINE HAIR: for 10 consecutive yrs. I've had every type of hair extension you can imagine to hide, or cover up, my thin/fine hair. They destroyed my hair. Last yr I decided to chop my hair short & devote a yr to GREAT HAIR CARE. I am on a strict budget so after trial & error with many products these 4 are the absolute PERFECT COMBO! These hair masks, I believe, are the KEY to getting my hair to the HEALTHY, THICKER hair I have now.