Raw Sugar Men's Strengthen 2-in-1 Shampoo and Conditioner, Coconut, 18 fl oz. This shampoo is to strengthen the hair for growth reviving and thickening. The ingredients are fairly clean scoring a "good" rating using the Yuka app. Ingredients include tea tree, coconut, aloe, biotin and a protein complex. It is made with plant derived ingredients and is free of sulfates and parabens. It has been also allergy tested.