Tigi S-Factor Health Factor Shampoo This gentle sulfate & paraben-free shampoo is made with a fortifying Healthy Hair Complex of Nettle Yucca White Ginger Horsetail & Rosemary to promote healthy hair & scalp for fuller stronger hair. Ideal for hair with extreme damage caused by environmental elements heated tools or over-processing. Use daily & follow with Health Factor Daily Dose Conditioner.