Paula's Choice Smoothing Primer Serum SPF 30 Versus Cover FX Invisible Primer SPF 30

Paula's Choice Smoothing Primer Serum SPF 30 Versus Cover FX Invisible Primer SPF 30 Detailed comparison of Paula's Choice Smoothing Primer Serum SPF 30 versus Cover FX Invisible Primer SPF 30. Isododecane Ethylhexyl Methoxycinnamate 6% Dimethicone/Vinyl Dimethicone Crosspolymer Butyloctyl Salicylate Homosalate 4% Ethylhexyl Salicylate 4% Butyl Methoxydibenzoylmethane 2% Polysilicone-11 Bisabolol Coffea Arabica Seed Extract Glycyrrhiza Glabra Root Extract Chamomilla Recutita Flower Extract Retinyl Palmitate Aloe Barbadensis Leaf Extract Calluna Vulgaris Flower Extract Camellia Sinensis Leaf Extract Chlorella Vulgaris Extract Caprylic/Capric Triglyceride Physalis Angulata Extract Pyrus Malus Fruit Extract Diethylhexyl Syringylidenemalonate Isododecane, Ethylhexyl Methoxycinnamate 6%, Dimethicone/Vinyl Dimethicone Crosspolymer, Butyloctyl Salicylate, Homosalate 4%, Ethylhexyl Salicylate 4%, Butyl Methoxydibenzoylmethane 2%, Polysilicone-11, Bisabolol, Coffea Arabica Seed Extract, Glycyrrhiza Glabra Root Extract, Chamomilla Recutita Flower Extract, Retinyl Palmitate, Aloe Barbadensis Leaf Extract, Calluna Vulgaris Flower Extract, Camellia Sinensis Leaf Extract, Chlorella Vulgaris Extract, Caprylic/Capric Triglyceride, Physalis Angulata Extract, Pyrus Malus Fruit Extract, Diethylhexyl Syringylidenemalonate Butyl Methoxydibenzoylmethane 3% Homosalate 10% Ethylhexyl Salicylate 5% Octocrylene 2.6% Dimethicone/Bis-Isobutyl PPG-20 Crosspolymer C12-15 Alkyl Benzoate Caprylyl Methicone Solanum Lycopersicum Fruit Extract Sesamum Indicum Seed Extract Tocopheryl Acetate Squalane Tocopherol Silica Dimethyl Isosorbide Butyl Methoxydibenzoylmethane 3%, Homosalate 10%, Ethylhexyl Salicylate 5%, Octocrylene 2.6%, Isododecane, Dimethicone/Bis-Isobutyl PPG-20 Crosspolymer, C12-15 Alkyl Benzoate, Butyloctyl Salicylate, Caprylyl Methicone, Caprylic/Capric Triglyceride, Dimethicone/Vinyl Dimethicone Crosspolymer, Solanum Lycopersicum Fruit Extract, Sesamum Indicum Seed Extract, Tocopheryl Acetate, Squalane, Tocopherol, Silica, Dimethyl Isosorbide These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Also known as Avobenzone, this ingredient is an oil-soluble used to absorb the full spectrum of UVA rays (peak 357 nm). It's one of the most effective UVA filters available but has a major caveat of photostability: avobenzone is susceptible to photodegradation. This means it can lose efficacy when exposed to sunlight without the help of a stabilizing agent. Studies show antioxidants (like vitamin E or vitamin C) and some UV filters (like octocrylene and Tinosorb S) can meaningfully improve its stability in a formulation. The maximum allowable concentration according to regulation is 3% in the US + Canada, and 5% in the EU, Australia, China, Korea, and ASEAN countries. It has a well-support safety profile: a comprehensive 2025 review found minimal toxicity with no evidence of carcinogenicity. Overall, avobenzone is a safe and regulated ingredient used in sunscreen for over 40 years. Butyloctyl Salicylate is a chemical UV filter structurally similar to octisalate. It is a photostabilizer, SPF booster, emollient and solvent. This ingredient helps evenly spread out ingredients. According to a manufacturer, it is suitable for pairing with micro Titanium Dioxide, Zinc Oxide, and pigments. Photostabilizers help stabilize UV-filters and prevents them from degrading quickly. Caprylic/Capric Triglyceride (aka MCT Oil) is a lightweight emollient, solvent, and texture enhancer. It is considered a skin-softener by helping to prevent moisture loss. Though it behaves like an oil, it is not technically one due to its chemical composition. One perk of this ingredient is that it is very stable, resistant to oxidation, and unlikely to go rancid. In practice, that translates to a long shelf life and a consistently elegant skin feel. While there is an assumption Caprylic Triglyceride can clog pores due to it being derived from coconut oil, there is no research supporting this. Just patch test if you have concerns. Fractionated coconut oil and MCT Oil are both listed as Caprylic/Capric Triglyceride according to INCI. This is because INCI names are based on the ingredient’s final chemical composition and not its marketing name or source. This ingredient is treated as the gold standard fungal acne safe oil. Even though it is coconut derived, the problematic lauric acid is stripped out. This leaves just caprylic (C8) and capric (C10) acid. These chain lengths actually trend antifungal; a 2020 study found caprylic acid was enough to disrupt Malassezia furfur cell membrane, with a caprylic acid derivative damaging membrane structures at concentrations as low as 0.2%. This ingredient is a silicone elastomer that works as a texture enhancer, adds a silky slip, and also helps absorb excess oil. Because it's a large macromolecule that's insoluble in water and chemically inert, it's not expected to penetrate or be absorbed into skin. Human patch te