Supergoop! Zincscreen 100% Mineral Lotion SPF 40 Versus Summer Fridays ShadeDrops Broad Spectrum SPF 30 Mineral Milk Sunscreen

Supergoop! Zincscreen 100% Mineral Lotion SPF 40 Versus Summer Fridays ShadeDrops Broad Spectrum SPF 30 Mineral Milk Sunscreen Detailed comparison of Supergoop! Zincscreen 100% Mineral Lotion SPF 40 versus Summer Fridays ShadeDrops Broad Spectrum SPF 30 Mineral Milk Sunscreen. This mineral sunscreen covers the full UV range and blocks ~98% of UVB at SPF 40. This hybrid sunscreen covers the full UV range and blocks ~97% of UVB at SPF 30. Zinc Oxide 13% Water Tetradecane Cetearyl Nonanoate Ethylhexyl Palmitate Caprylic/Capric Triglyceride Isopropyl Palmitate Isopropyl Myristate Glycerin Polyglyceryl-3 Diisostearate Mica Propanediol Disteardimonium Hectorite Gluconolactone Polyglyceryl-6 Polyricinoleate Brassica Campestris/Aleurites Fordi Oil Copolymer Polyhydroxystearic Acid Sodium Chloride Magnesium Sulfate Fructose Octyldodecyl Oleate Tocopherol Cocos Nucifera Fruit Extract Sodium Benzoate CI 77492 Dodecane Hexadecane CI 77891 Withania Somnifera Flower Extract CI 77491 Vaccinium Angustifolium Fruit Extract Silica Calcium Gluconate Zinc Oxide 13%, Water, Tetradecane, Cetearyl Nonanoate, Ethylhexyl Palmitate, Caprylic/Capric Triglyceride, Isopropyl Palmitate, Isopropyl Myristate, Glycerin, Polyglyceryl-3 Diisostearate, Mica, Propanediol, Disteardimonium Hectorite, Gluconolactone, Polyglyceryl-6 Polyricinoleate, Brassica Campestris/Aleurites Fordi Oil Copolymer, Polyhydroxystearic Acid, Sodium Chloride, Magnesium Sulfate, Fructose, Octyldodecyl Oleate, Tocopherol, Cocos Nucifera Fruit Extract, Sodium Benzoate, CI 77492, Dodecane, Hexadecane, CI 77891, Withania Somnifera Flower Extract, CI 77491, Vaccinium Angustifolium Fruit Extract, Silica, Calcium Gluconate Zinc Oxide 9.4% C12-15 Alkyl Benzoate Sorbitan Oleate Decylglucoside Crosspolymer Argania Spinosa Kernel Oil Tocopheryl Acetate Ammonium Acryloyldimethyltaurate/Vp Copolymer Caramel Polyester-5 Squalane Butyrospermum Parkii Butter Extract Bisabolol Phospholipids Ethyl Ferulate Urea Ethylhexylglycerin Triethoxycaprylylsilane Dimethicone Benzyl Alcohol Sorbic Acid Chlorphenesin Phenoxyethanol Zinc Oxide 9.4%, Water, C12-15 Alkyl Benzoate, Sorbitan Oleate Decylglucoside Crosspolymer, Argania Spinosa Kernel Oil, Tocopheryl Acetate, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Glycerin, Caramel, Polyester-5, Squalane, Butyrospermum Parkii Butter Extract, Bisabolol, Phospholipids, Tocopherol, Ethyl Ferulate, Urea, Ethylhexylglycerin, Gluconolactone, Triethoxycaprylylsilane, Dimethicone, Sodium Chloride, Benzyl Alcohol, Sodium Benzoate, Sorbic Acid, Chlorphenesin, Phenoxyethanol These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Gluconolactone is a PHA. PHAs are a great gentle alternative to traditional AHAs. When applied, Gluconolactone has the same affect on skin as AHAs such as lactic acid. It helps dissolve the dead skin cells in the top layer of your skin. This improves texture and brightens the skin. PHAs are more gentle than AHAs due to their larger structure. They do not penetrate as deeply as AHAs and take a longer time to dissolve dead cells. Studies show PHAs do not cause as much irritation. Gluconolactone has some interesting properties: In a 2004 study, Gluconolactone was found to prevent UV damage in mouse skin cells and has not been found to increase sun sensitivity. However, we still recommend wearing SPF daily. This ingredient is is an created by reacting gluconic acid with an alcohol. Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum. Topically, glycerin does several things at once: Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3. Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin. This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products. Just know very high concentrations (>40%) can feel tacky in low humidity. Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine. Sodium Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically. Both the US FDA and EU Health Committee have approved the use of sodium benzoate. In the US, levels of 0.1% (of the total product) are allowed. Sodium benzoate works as a preservative by inhibiting the growth of bacteria inside of cells. It prevents the cell from fermenting a type of sugar using an enzyme called phosphofructokinase. It is the salt of benzoic acid. Foods containing sodium benzoate include soda, salad dressings, condiments, fruit juices, wines, and snack foods. Studies for using ascorbic acid and sodium benzoate in cosmetics are lacking, especially in skincare routines with multiple steps. We always recommend speaking with a professional, such as a dermatologist, if you have any concerns. Chances are, you eat sodium chloride every day. Sodium Chloride is also known as table salt. This ingredient has many purposes in skincare: thickener, emulsifier, and exfoliator. You'll most likely find this ingredient in cleansers where it is used to create a gel-like textur