First, a little about why it’s so important to use the right sunscreen when you have luxury hair extensions, (via: https://www.hji.co.uk/hair-extensions/what-to-tell-clients-sun-sea-and-hair-extensions/ ):

HOW DOES SUNSCREEN AFFECT HAIR EXTENSIONS?
We are all aware of {sunscreen} staining clothes, but SPF protection could also be staining your extension clients’ hair too. Dyed blonde hair or blonde hair extensions are particularly susceptible to discolouration; turning pink or orange in patches at the ends of their hair. Those with darker locks, may notice a slight change in colour, but the effect is much more noticeable on blonde hair which has been subject to more processing.

WHAT’S IN SUNSCREEN THAT CAUSES THE HAIR TO DISCOLOR?
1) Avebenzone (Butyl Methoxydibenzoylmethane) which is an oil-soluble ingredient used in sunscreen products to absorb the full spectrum of UVA rays.
2) Octocrylene, which is added as a stabiliser as the Avebenzone degrades in light. Together they are found in differing quantities in sun protections.

WHAT IS THE SCIENCE BEHIND IT ALL?
Essentially the colour change is as a result of a chemical reaction. When the sunscreen is absorbed into the hair and exposed to the UV light, it causes the cells to break down in a process known as Reactive Oxygen Species (ROS). The cells break down and seek out electron particles to form a new cell structure. When the hair is rinsed in water, from showers and pools, then the electron particles in the minerals in the water such as Iron, Copper, Magnesium, Calcium and Silica, attach to the hair cells creating a reaction.
(via: https://www.hji.co.uk/hair-extensions/what-to-tell-clients-sun-sea-and-hair-extensions/)

Shop our sunscreen recommendations HERE
(the key is to ensure you are using a mineral, rub-on sunscreen)