OLAPLEX No. 4 Bond Maintenance Shampoo in Beauty: NA OLAPLEX No. 4 Bond Maintenance Shampoo is the ultimate breakage insurance. Bring home the salon quality protection of OLAPLEX with this daily shampoo featuring the brand's patented active ingredient, which works on a molecular level to seek out broken bonds caused by chemical, thermal, and mechanical damage, restoring a healthy look and feel to hair.. Imparts moisture, strength, and manageability pH Balance: 6-6.5. Free of DEA, aldehydes and formaldehydeparabens, phthalates, and sulfates Cruelty-free. Vegan Suitable for all hair types and lengths. 8.5 fl oz. Apply and massage product throughout hair. For best results follow with OLAPLEX No. 5 Bond Maintenance Conditioner. OPLX-UU3. 20140616. About the designer: OLAPLEX is based on the principle of doing everything others don't and are changing the world of hair. Founded in 2014 by beauty industry veterans Dean and Darcy Christal, OLAPLEX is a team of chemists, industry experts and innovators developing beauty products based on science. Through a grassroots approach, the brand quickly became a global sensation, paving the way for a completely new category of haircare called bond-building. OLAPLEX restores damaged and compromised hair by repairing from the inside out with their revolutionary, patented technology that protects and repairs hair from damage. Once all the bonds are intact and in alignment, you have healthy, beautiful, shiny, touchable hair.