Paula's Choice Extra Care Non-greasy Sunscreen SPF 50

Paula's Choice Extra Care Non-greasy Sunscreen SPF 50 Paula's Choice Extra Care Non-greasy Sunscreen SPF 50 ingredients explained: Homosalate (10%), Oxybenzone (6%), Octisalate (5%), Avobenzone (3%), Octocrylene (2%), Water, Butylene Glycol (Hydration/Texture-Enhancing), PEG-8 (Texture-Enhancing), Polyethylene (Texture-Enhancing), Silica (Absorbent), Dimethicone (Hydration), Picea Abies Wood Extract (Skin-Soothing), Sodium Ascorbyl Phosphate (Vitamin C/Antioxidant), Retinyl Palmitate (Vitamin A/Antioxidant/Skin Replenishing), Tocopherol (Vitamin E/Antioxidant), Tocopheryl Acetate (Vitamin E/Antioxidant), Titanium Dioxide (Texture-Enhancing), Aloe Barbadensis Leaf Juice (Hydration/Skin-Soothing), Bentonite (Absorbent), Methyl Glucose Sesquistearate (Texture-Enhancing), Acrylates/C10-30 Alkyl Acrylate Crosspolymer (Texture-Enhancing), Sodium Polyacrylate (Texture-Enhancing), Kaolin (Absorbent), Ethylhexylglycerin (Preservative), Disodium EDTA (Stabilizer), Sodium Hydroxide (Ph Adjuster), Phenoxyethanol (Preservatives), Chlorphenesin (Preser Show all ingredients by function Homosalate (10%) sunscreen Oxybenzone (6%) 0, 0 icky Octisalate (5%) Avobenzone (3%) goodie Octocrylene (2%) Water solvent Butylene Glycol (Hydration/Texture-Enhancing) moisturizer/​humectant, solvent 0, 1 PEG-8 (Texture-Enhancing) Polyethylene (Texture-Enhancing) viscosity controlling Silica (Absorbent) Dimethicone (Hydration) emollient Picea Abies Wood Extract (Skin-Soothing) Sodium Ascorbyl Phosphate (Vitamin C/Antioxidant) antioxidant, anti-acne Retinyl Palmitate (Vitamin A/Antioxidant/Skin Replenishing) cell-communicating ingredient 1-3, 1-3 Tocopherol (Vitamin E/Antioxidant) antioxidant 0-3, 0-3 Tocopheryl Acetate (Vitamin E/Antioxidant) Titanium Dioxide (Texture-Enhancing) sunscreen, colorant Aloe Barbadensis Leaf Juice (Hydration/Skin-Soothing) soothing, moisturizer/​humectant Bentonite (Absorbent) Methyl Glucose Sesquistearate (Texture-Enhancing) emollient, emulsifying Acrylates/C10-30 Alkyl Acrylate Crosspolymer (Texture-Enhancing) Sodium Polyacrylate (Texture-Enhancing) Kaolin (Absorbent) colorant, abrasive/​scrub Ethylhexylglycerin (Preservative) preservative Disodium EDTA (Stabilizer) chelating Sodium Hydroxide (Ph Adjuster) buffering Phenoxyethanol (Preservatives) Chlorphenesin (Preservative) preservative, antimicrobial/​antibacterial 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. Expand to read more 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 chemical sunscreen agent that absorbs UVB and short UVA rays (280-350nm) with its peak protection at 288 nm. Unlike many other chemical sunscreens, it is highly stable but its UV absorbing abilities are weak so it always has to be combined with other sunscreen agents for proper protection. More often than not, it's used as a photostabilizer rather than a proper sunscreen agent as it can protect formulas nicely from UV damage. Regarding safety, BP-3 is somewhat controversial. First, its molecules are small (228 Da) and very lipophilic (oil loving) and these properties result in very good absorption. The problem is that you want sunscreens on the top of your skin and not in your bloodstream, so for BP-3 this is a problem. In fact, it absorbs so well that 4 hours after application of a sunscreen product with BP-3, it can be detected in urine. Another concern of BP-3 is that it shows some estrogenic activity, though it's probably not relevant when applied topically to the skin. Estrogenic activity was confirmed only in-vitro (in test tubes) and when taken orally by lab animals, and not when used topically as you would normally. In fact, a 2004 follow-up study to examine the estrogenic effect of sunscreens when used topically on the whole body found that "the endogenous levels of reproductive hormones were unaffected" (even though BP-3 could be detected both in plasma and urine, so its absorption is no doubt too good). If that was not enough, Wikipedia claims that BP-3 is nowadays the most common allergen found in sunscreens, and the always-trustworthy smartskincare writes that "[benzophenones] have been shown in some studies to promote the generation of potentially harmful free radicals". On the up side, sunscreens are pretty well regulated in several parts of the world, and BP-3 is considered "safe as used" and is an allowed sunscre what‑it‑does irritancy, com. moisturizer/humectant | solvent antioxidant | anti-acne sunscreen | colorant soothing | moisturizer/humectant emollient | emulsifying colorant | abrasive/scrub preservative | antimicrobial/antibacterial

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