We wish making a good sunscreen using only Zinc as the active was as easy as putting Zinc into a moisturiser, but it’s not. Good broad spectrum sun protection using only Zinc without being too greasy is very complicated. Stability, a good reflective film, naturally preserved…all of these things took us 4 years of work to achieve. But it was worth it and this is why:
Our sunscreen suits:
- People that are sensitive to sunscreen with UV filters.
- People that want a Zinc only based sunscreen that is not greasy.
- People that like know what is in their sunscreen.
Like many things in life, a little extra time can result in a lot of extra benefit. Smear on some Zinc based Sunscreen, allow 30 seconds for it to warm to body temperature and then rub it in clear.
||An easier way to make a natural sunscreen is to mix Zinc in with Oils. But we wanted something that went on cool like a moisturiser, and wasn't oily. So it took a lot of time (3 years) to make a natural sunscreen with water in it like a moistursier.
||Sits on the surface of the skin and reflects and scatters UV A and UV B radiation like a mirror. It rubs in clear as the zinc contains holes that make it see through.
||A non clogging moisturizing oil.
||Moisturising polysaccharide from Larch trees. Also supports SPF through ensuring zinc is dispersed evenly.
||Helps keep the cream thick and stable enough to ensure Zinc stays dispersed.
||A light coconut based emollient (moisturiser)
|Sorbitan Olivate & Lecithin & Polyglyceryl-2 Dipolyhydroxystearate & Cetyl Phosphate & Polyglyceryl-3 Polyricinoleate, & Oleic Acid
||We needed a number of different emulsifiers to make sure the Zinc disperses properly in the cream. If the Zinc clumps, then the SPF would not be as high and consistent. Although the ingredients have complicated names, they are all “natural”. That is that they are all plant derived.
||Glycerin is a humecant (attracts water) that is used in many moisturisers. We generally do not use Glycerin, but needed to in our sunscreen because Zinc can also absorb water.
|Sodium Chloride (salt)
||Helps keep the cream stable.