Paula's Choice Smoothing Primer Serum Spf 30

Paula's Choice Smoothing Primer Serum Spf 30 Paula's Choice Smoothing Primer Serum Spf 30 ingredients explained: Avobenzone (2%), Homosalate (4.0%), Octinoxate (6.0%), Octisalate (4.0%), Isododecane, Dimethicone/Vinyl Dimethicone Crosspolymer, Butyloctyl Salicylate, Polysilicone-11, Bisabolol, Coffea Arabica (Coffee) Seed Extract, Glycyrrhiza Glabra (Licorice) Root Extract, Chamomilla Recutita (Matricaria) Flower Extract, Retinyl Palmitate, Aloe Barbadensis Leaf Extract, Calluna Vulgaris Flower Extract, Camellia Sinensis (Green Tea) Leaf Extract, Chlorella Vulgaris Extract, Caprylic/Capric Triglyceride, Physalis Angulata Extract, Pyrus Malus (Apple) Fruit Extract, Diethylhexyl Syringylidenemalonate Show all ingredients by function Avobenzone (2%) sunscreen goodie Homosalate (4.0%) Octinoxate (6.0%) 0, 0 Octisalate (4.0%) Isododecane emollient, solvent Dimethicone/Vinyl Dimethicone Crosspolymer viscosity controlling Butyloctyl Salicylate solvent Polysilicone-11 Bisabolol soothing Coffea Arabica (Coffee) Seed Extract Glycyrrhiza Glabra (Licorice) Root Extract soothing, skin brightening superstar Chamomilla Recutita (Matricaria) Flower Extract soothing, antioxidant Retinyl Palmitate cell-communicating ingredient 1-3, 1-3 Aloe Barbadensis Leaf Extract soothing, emollient, moisturizer/​humectant Calluna Vulgaris Flower Extract Camellia Sinensis (Green Tea) Leaf Extract antioxidant, soothing Chlorella Vulgaris Extract Caprylic/Capric Triglyceride emollient Physalis Angulata Extract Pyrus Malus (Apple) Fruit Extract moisturizer/​humectant Diethylhexyl Syringylidenemalonate The famous Avobenzone. It is a special snowflake as it is the only globally available chemical sunscreen agent that provides proper UVA protection (in the US, new generation sunscreen agents are not approved because of impossible FDA regulations). It is the global gold standard of UVA protection and is the most used UVA sunscreen in the world. It gives very good protection across the whole UVA range (310-400 nm that is both UVA1 and UVA2) with a peak protection at 360 nm. The problem with it, though, is that it is not photostable and degrades in the sunlight. Wikipedia says that avobenzone loses 36% of its UV-absorption capacity after just one hour of sunlight (yep, this is one of the reasons why sunscreens have to be reapplied after a few hours). Expand to read more The cosmetic's industry is trying to solve the problem by combining avobenzone with other UV filters that enhance its stability (like octocrylene, Tinosorb S or Ensulizole) or by encapsulating it and while both solutions help, neither is perfect. Interestingly, the combination of avobenzone with mineral sunscreens (that is titanium dioxide and zinc oxide) is not a good idea. In the US, it is flat out prohibited as avobenzone becomes unstable when combined with mineral sunscreens. As for safety, avobenzone has a pretty good safety profile. It counts as non-irritating, and unlike some other chemical sunscreens, it shows no estrogenic effect. The maximum concentration of avobenzone permitted is 5% in the EU and 3% in the US. An oil-soluble chemical sunscreen agent that protects the skin from UVB (295-315 nm) with a peak protection at 306 nm. Homosalate is not a strong UV filter in and of itself (gives only SPF 4.3 protection at max. allowed 10% concentration) and it is not photostable (looses 10% of its SPF protection in 45 mins) so it always has to be combined with other sunscreens for proper protection. Its big advantage, though, is that it is a liquid and is excellent for dissolving other hard to solubilize powder sunscreen agents, like the famous Avobenzone. Regarding Homosalate's safety profile, we do not have the best news. In-vitro (made in the labs) studies have shown that it might have some estrogenic activity. Do not panic, these studies were not conducted on real humans under real world conditions. Still, if you are a 'better safe than sorry' type, be careful when using Homosalate containing sunscreens long-term and full-body. As of 2020, Homosalate is permitted to be used up to 10% in the EU and 15% in the US, but the EU is currently considering restricting it to only 1.4% (probably taking effect from 2022). A clear, oil-soluble, "cosmetically-elegant" liquid that is the most commonly used chemical sunscreen. It absorbs UVB radiation (at wavelengths: 280-320 nm) with a peak protection at 310nm. It only protects against UVB and not UVA rays (the 320-400 nm range) – so always choose products that contain other sunscreens too. It is not very stable either, when exposed to sunli what‑it‑does irritancy, com. emollient | solvent soothing | skin brightening soothing | antioxidant soothing | emollient | moisturizer/humectant antioxidant | soothing moisturizer/humectant

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