PCA Skin Daily Defense Broad Spectrum Spf 50+

PCA Skin Daily Defense Broad Spectrum Spf 50+ PCA Skin Daily Defense Broad Spectrum Spf 50+ ingredients explained: Octisalate (4.9%), Octocrylene (9.5%), Zinc Oxide (9.1%), Avena Sativa (Oat) Bran Extract, Bisabolol, Butylene Glycol, Butyloctyl Salicylate, Caffeine, Caprylyl Methicone, Citrus Aurantium Dulcis (Orange) Peel Extract, Cyclopentasiloxane, Ectoin, Ethyl Ferulate, Ethylhexylglycerin, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Octyldodecyl Neopentanoate, Oleth-3 Phosphate, PEG-7 Trimethylolpropane Coconut Ether, Phenoxyethanol, Polyisobutene, Propanediol, Silybum Marianum Seed Extract, Sodium Hyaluronate, Sodium Stearoyl Glutamate, Tocopheryl Acetate, Triethoxycaprylylsilane, Water Show all ingredients by function Octisalate (4.9%) sunscreen 0, 0 Octocrylene (9.5%) Zinc Oxide (9.1%) 0, 1 goodie Avena Sativa (Oat) Bran Extract soothing, abrasive/​scrub Bisabolol soothing Butylene Glycol moisturizer/​humectant, solvent Butyloctyl Salicylate solvent Caffeine antioxidant, perfuming Caprylyl Methicone emollient Citrus Aurantium Dulcis (Orange) Peel Extract perfuming, viscosity controlling Cyclopentasiloxane emollient, solvent Ectoin antioxidant, soothing, moisturizer/​humectant Ethyl Ferulate antioxidant Ethylhexylglycerin preservative Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer viscosity controlling Octyldodecyl Neopentanoate Oleth-3 Phosphate surfactant/​cleansing, emulsifying 2, 2 PEG-7 Trimethylolpropane Coconut Ether emulsifying, surfactant/​cleansing Phenoxyethanol Polyisobutene Propanediol solvent, moisturizer/​humectant Silybum Marianum Seed Extract Sodium Hyaluronate skin-identical ingredient, moisturizer/​humectant Sodium Stearoyl Glutamate Tocopheryl Acetate Triethoxycaprylylsilane Water A colorless to light yellowish oily liquid that works as a UVB (280-320nm) sunscreen filter with a peak absorbance at 306 nm. It's not a strong filter in itself, it's always used in combination with other sunscreen agents to further enhance the SPF and to solubilize other solid UV filters. It has a good safety profile and is allowed to be used at a max concentration of 5% both in the US and in Europe (10% is allowed in Japan). An oil-soluble chemical sunscreen agent that protects skin in the UVB and somewhat in the UVA II range with a peak absorption of 304 nm. Its protection is not strong enough on its own but it is quite photostable (loses 10% of SPF protection in 95 mins) and is often used to stabilize other photo-unstable UV-filters, for example, Avobenzone. It is also often used to improve the water resistance of the products. Octocrylene's safety profile is generally quite good, though a review study in Contact Dermatitis reports an "increasing number of patients with photo contact allergy to octocrylene." Mainly adults with ketoprofen-sensitivity and children with sensitive skin are affected, so if you have a small kid, it is probably better to use octocrylene-free sunscreens. When it comes to sunscreen agents, Zinc Oxide is pretty much in a league of its own. 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. If physical sunscreens don't tell you anything, go ahead and read about the basics here. Most of what we wrote about Titanium Dioxide is also true for Zinc Oxide so we will focus here on the differences. Expand to read more 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. It protects against UVB, UVA II, and UVA I almost uniformly, and is considered to be the broadest range sunscreen available today. It's also highly stable and non-irritating. So much so that Zinc Oxide also counts as a skin protectant and anti-irritant. It's also often used to treat skin irritations such as diaper rash. As for the disadvantages, Zinc Oxide is also not cosmetically elegant. It leaves a disturbing whitish tint on the skin, although, according to a 2000 research paper by Dr. Pinnell, it's slightly less white than TiO2. Still, it's white and disturbing enough to use Zinc Oxide nanoparticles more and more often. We wrote more about nanoparticles and the concerns around them here, but the gist is that if nanoparticles were absorbed into the skin that would be a reason for legitimate health concerns. But luckily, so far research shows that sunscreen nanoparticles are not absorbed but remain on the surface of the skin or in the uppermost (dead) layer of the skin. This seems to be true even if the skin is damaged, for example, sunburnt. All in all, if you've found a Zinc Oxide sunscreen that you are happy to use every single day, that what‑it‑does irritancy, com. soothing | abrasive/scrub moisturizer/humectant | solvent antioxidant | perfuming perfuming | viscosity controlling emollient | solvent antioxidant | soothing | moisturizer/humectant surfactant/cleansing | emulsifying emulsifying | surfactant/cleansing solvent | moisturizer/humectant skin-identical ingredient | moisturizer/humectant

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