The tinted version contains Mica and Iron Oxides for color but outside of that the formulations are nearly identical.

The English translation is, so far it looks like sunscreens with nanoparticles do stay on the surface of the skin where they should be.

As for skincare, it makes the skin silky smooth, creates a subtle gloss and forms a protective barrier (aka occlusive). I'd love to always wear my favorite non-water-resistant spf, but unfortunately those are not so helpful for when you're at the beach/pool - on such days, I dread having to reach for the thick pasty gloopy water-resistant ones. I don't give it a five star just because I have very oily skin and this sunscreen is a little more moisturizing. The first main difference is that while TiO2 gives a nice broad spectrum protection, Zinc Oxide has an even nicer and even broader spectrum protection.

While there is no specific test to receive a Reef-Friendly certification, all CoTZ sunscreen products are 100% free of chemical actives like oxybenzone and octinoxate, chemical actives known to pose a risk to marine life. The Cotz lip balm offers SPF 45 protection and helps moisturize the lips while protecting them from harmful sun rays.Hopefully there will be some more winners in the bunch but for now I am happy to say I have found my new favorite sunscreen brand. If the item comes direct from a manufacturer, it may be delivered in non-retail packaging, such as a plain or unprinted box or plastic bag.

I’m so happy to have stumbled across these two sunscreens as they were a much needed reprieve from Supergoop!A 2009 review article about the safety of nanoparticles summarizes this, "to date, in-vivo and in-vitro studies have not demonstrated percutaneous penetration of nanosized particles in titanium dioxide and zinc oxide sunscreens". It's a physical (or inorganic) sunscreen that has a lot in common with fellow inorganic sunscreen Titanium Dioxide (TiO2) but a couple of things make it superior even to TiO2. Unlike some other sunscreens, Cotz relies on a physical barrier with Zinc Oxide rather than chemical ingredients.

I received a tube as a PR package right as I started to notice my longtime facial sunscreen was creasing in my fine lines. CōTZ® Silky Foam SPF 30 is a virtual weightless non-tinted mineral sunscreen in a silky soft, easy to apply foam that blends translucent on skin. CoTZ sunscreen products also help prevent photo and cellular damage to the skin, whether it is airborne pollutants, wind or the damaging effects of radiation.A silicone molecule that is half-way between Dimethicone and Methicone, meaning that some of the methyl (-CH3) groups are replaced with a hydrogen atom (in Methicone half of the CH3 groups are replaced). I have tested like 30 different mineral water-resistant options by now, and this one along with the C'est Moi sunshine sunscreen are the two best I've found. It's definitely one of the best, or probably even the best option out there for sun protection available worldwide. I seriously wish I had found this sooner before spending on so many others that promised to be sheer zinc only to be the color and texture of white wall paint. These products are not only ideal for anyone who wants to prevent sun damage but also a great choice for people with light-sensitive medical conditions.