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Ideal SPF boosting film formers for mineral based sunscreens? 20 listed.
Looking to get the below 10% ZnO daily wear sunscreen/moisturizer up from SPF ~15 to SPF30.
Base formula (OIW)
Water, Zinc Oxide, Caprylic/Capric Triglyceride, Caprylyl Methicone, Ceterayl Olivate, Sorbitan Olivate, Glyceryl Stearate, Polyhydroxystearic Acid, Triethoxycaprylylsilane, Sclerotium Gum.Will likely add Butyloctyl Salicylate as a pigment stabilizer to get from SPF15 to ~20-25. Then the ideal film former increases SPF 25%, decreases TEWL, waterproofs the formula and is safe for daily decade long use - it exists, right?
Here’re the ones I’ve found, spanning from completely natural to completely synthetic, I’m fine with synthetics as long as they have a solid safety track record, especially since this is for a daily wear formula and not just an occasional wear sunscreen. Also waiting to hear back from DOW technicians to see if they have any tips.
Trade Name : INCI
2502 Cosmetic Fluid : Cetyl Dimethicone2503 Cosmetic Wax : Stearyl Dimethicone556 Cosmetic Grade Fluid : Phenyltrimethicone5562 Carbinol Fluid : Bis-Hydroxyethoxypropyl Dimethicone680 ID Fluid : lsododecane (and) Polypropylsilsesquioxane9701 Cosmetic Powder : Dimethicone/VinyI Dimethicone Crosspolymer (and) SilicaAMS-C30 Cosmetic Wax : C30-45 Alkyl Methicone (and) C30-45 OlefinBeeswax : BeeswaxCandelilla wax : Euphorbia Cerifera (candelilla) waxCarnauba wax : Copernicia prunifera (carnauba) waxFA 4002 ID Silicone Acrylate : lsododecane (and) Acrylates Polytrimethylsiloxymethacrylate CopolymerKoboguard® 5400 CCT : Hydrogenated PolycyclopentadieneLaraCare A200 : Galactoarabinan
Methyl Dihydroabietate? : Methyl DihydroabietateMQ-1600 Solid Resin : TrimethylsiloxysilicateMQ-1640 Flake Resin : Trimethylsiloxysilicate (and) PolypropylsilsesquioxaneSW—8005 C30 Resin Wax : C30-45 Alkyldimethylsilyl PolypropylsilsesquioxaneSyvaclear A200V : Ethylenediamine/Hydrogenated Dimer Dilinoleate Copolymer Bis-Di-C14-18 Alkyl AmideVarious : Acrylates CopolymerLet me know if you have any ideas!
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4 Replies
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This preparation used a lots of chemical
Few among them can be avoided if use wisely
My suggestion is it would be a good idea if we use only necessary ingredients
This will call classical pharmacy practice .
Otherwise if we use so many chemical then what’s the difference between us and branded product. -
@pradeep
This is a very old discussion. The fact that it’s not active anymore should be an indication that the problem has probably been solved in the mean time. -
@pradeep
You have also misunderstood the object of the post. It was merely a list of possible materials for the specified end use. It is not a LOI for a product. -
Sunspheres—Dow- styrene/acrylates copolymer wil give you a 20-30% boost in SPF using Zno/TiO2—- have tested many times and gives a nice even smooth skin feel.Our first go to Booster .http://www.dow.com/assets/attachments/business/pcare/sunspheres/sunspheres_powder/tds/sunspheres_powder.pdf
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