Olaplex N.7 bonding Oil is a hair styling formula that is innovatively designed to boost the shine, softness and color vibrancy of the hair. This lightweight formulation infused with Olaplex Bond Building Technology contains Sunflower, Moringa, Pomegranate, and Green Tea & Grape Seed Oils, this highly concentrated, yet super lightweight reparative hair styling oil delivers shine, reduces breakage, controls frizz for up to 72 hours and imparts silky softness while protecting hair from heat up to 450F232C. This also contains a key ingredient used is Bis-aminopropyl diglycol dimaleate that works at molecular level to dramatically improve the hair strength, repair damage and protect the hair. It repairs, strengthens, and moisturizes hair prone to damage or dryness. Hair is made up of the fibrous protein, keratin and held together by bonds. Hydrogen and salt bonds are physical bonds and are easily reformed by changes in pH, water andor heat. Disulfide bonds are chemical covalent bonds. These bonds cannot be broken by water. Millions of disulfide bonds give hair its structure, strength, and stability. When hair subjected to heat styling, color or chemical treatment, sometimes brushing & tugging or due to weather may lead to breakage of these disulfide bonds. When these disulfide bonds are broken, hair is damaged and can appear dry, frizzy, and brittle. Olaplex No.7 highly concentrated lightweight hair styling oil that dramatically improve shine & softness and it reduces flyaways and frizz, while providing UVheat protection of up to 232C. Study showed that 125% more shine, 77% reduction in breakage and 72 hours frizz control after the usage of this bonding oil.