An emollient liquid that usually comes to the formula combined with C12-15 Alkyl Benzoate and Dipropylene Glycol Dibenzoate as the trio works in synergy to solubilize hard to dissolve sunscreen agents while providing a nice, non-greasy skin feel. 

Acrylates/C12-22 Alkyl Methacrylate Copolymer is a big molecule created from repeating subunits (aka polymer) used as a film-former. It is great at improving the water and wear resistance of sunscreens and makeup products.

An oily liquid that makes your skin nice and smooth (aka emollient). It is also claimed to have some humectant and moisturizing properties without a greasy after-feel. But its real superpower is being an outstanding solvent for hard to solubilize sunscreen agents (that is most of the chemical sunscreen filters) making it an excellent emollient choice in high SPF products. 

The salt form of the water-soluble chemical sunscreen, Ensulizole. What we wrote there (UVB filter with a peak protection at 306 nm), applies here as well. In fact, the pure acid form (aka Phenylbenzimidazole Sulfonic Acid) can be incorporated into a sunscreen formula only if it is neutralized with a base (otherwise it is not water-soluble), so even if the acid form in on the ingredient list, what you have in the formula is a salt form, just like this one.  You can read more here >> 

A silicone-based, chemical sunscreen agent that protects the skin in the UVB range (290-320 nm) with a peak absorbance at 312 nm. It is a colorless to pale yellow liquid with nice and non-shiny (at least compared to most other sunscreens) sensorial properties.  It is a pretty good team player and can stabilize the famously unstable UVA filter, avobenzone and works especially well with Ensulizole to achieve high SPF protection. It is approved up to 10% as a sunscreen filter in the EU and most parts of the world, except for the United States. 

Ethylhexyl Dimethyl PABA is a chemical sunscreen agent that protects in the UVB range (290-320 nm) with a peak absorbance at 312nm. Other than that, we struggle to write anything positive about this guy, as it is photo unstable (looses 10% efficacy in 20 mins and 50% in 85 mins), not an unfrequent allergen in sunscreens and shows some endocrine effect in animal studies.  All this does not mean that it is not considered safe as used, it is (and is approved up to 8% in the EU and US and up to 3% in Japan), but we do think that there are plenty of other and better UV filters out there. 

This long-named molecule is a chemical sunscreen agent that protects the skin from the UVA II rays (320-350 nm mainly) with a peak absorbance at 335 nm. Unlike most other sunscreen filters, it is not oil, but water-soluble helping formulators to create less greasy sunscreens. It also has a good safety profile with very low skin penetration and is approved up to 10% in the EU and pretty much everywhere else except for the United States (due to old and bad FDA sunscreen regulations). 

4-Methylbenzylidene Camphor is a chemical sunscreen agent that protects in the UVB range (290-320 nm) with a peak absorbance at 301 nm. It is an oil-soluble powder that is slightly photo-unstable (it takes 65 minutes to lose 10% of its protecting power and 345 minutes to lose half of it), but it can still help to stabilize the famously unstable UVA filter, avobenzone.  Regarding its safety, we do not have the best news. Two possible concerns are that it absorbs into the body and might have some estrogenic activity there. But do not panic, the latter one was only shown in rats and is probably not the case in humans, and  4-Methylbenzylidene Camphor is considered safe as used. It is legally approved both in the EU and  Australia up to 4%, however, it is not approved in the US and in Japan.  Overall, we think there are better UVB filter choices out there than this guy, but if your favorite sunscreen contains it, you should probably just continue to use it. 

Benzophenone-5 is the sodium salt brother of Benzophenone-4, and just like that guy, this one also works mainly as a photoprotectant to extend product shelf life, or as a color-protectant for products in clear packages.

Ethylhexyl Benzoate is a clear, almost colorless, oily liquid with a light and dry skin feel. But it is not only a nice and light emollient but also an excellent solubilizer for hard-to-dissolve sunscreen agents. 

Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate is an antioxidant molecule used in small amounts (less than 0.8%) to help products stay nice longer. More specifically, it is great at preventing discoloration or other types of oxidative degradation. It is a trendy alternative to often bad-mouthed synthetic antioxidant and stabilizer, BHT. 

An oil-soluble, chemical sunscreen agent that protects in the UVB (290-320 nm) range with a peak absorbance at 310 nm and with some additional protection in the UVA II (320-340nm) range. It is a newer generation UV filter that is approved up to 10% in the EU, but not (yet) available in the US due to impossible FDA regulations.