Non-virgin, naturally straight, honey blonde hair. Washed every other day with Pantene Pro-V shampoo & conditioner. Never straightened. Hair remains very straight, even with humid climate and all temperatures.To curl, use a straightener about twice a month (heat protection spray used each time). Never smoked/did drugs & never drank alcohol. Dyed once by professional using balayage technique in early 2019. Multivitamin taken everyday. Hair remains very healthy!