
Estée Lauder Perfectionist Pro Multi-Defense Aqua UV Gel SPF 50 With 8 Anti-Oxidants is a product with 50 ingredients: Water, Homosalate, Alcohol Denatured, Ethylhexyl Salicylate, Avobenzone, Benzophenone-3, Octocrylene, Butylene Glycol, Polymethylsilsesquioxane, Camellia Sinensis (Green Tea) Leaf Extract and 40 more.
Contains: Vitamins - Tocopheryl Acetate; Antioxidant - Camellia Sinensis (Green Tea) Leaf Extract, Caffeine, Tocopheryl Acetate, Tetrahexyldecyl Ascorbate, BHT;
Organic score: 24% natural, 50% chemical. Vegan - No; Cruelty free - No; Reef safe - No;
Positive effects
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INCI - Full Breakdown
Water is a great solvent. It’s neutral and doesn’t provide any strong positive or negative effects. It just helps components to mix better and to transport active components.

Alcohol Denatured is a great bacteria killer. Manufacturers often put it inside products to increase their shelf life.
Avobenzone is the only chemical UV-protection component with a broad spectrum coverage. It can help to block both UVA I and UVA II rays. It's safe and it is allowed to use at a 3% concentration in the USA and a 5% concentration in the EU countries.
There is one problem: avobenzone loses efficiency when exposed to the sun. If you are outside, it loses 36% of its ability to block UV rays an hour after application. That's why it's recommended to reapply sunscreen every 2 hours.
Octocrylene is an organic chemical sunscreen. It protects against UVA and UVB rays that can damage your skin or even lead to melanoma. It also stabilizes other sunscreen ingredients in a formulation and increases the water resistance of a product. It is approved by the FDA in concentrations of up to 10%. It’s not a very effective component on its own, that’s why manufacturers combine it with other chemical sunscreens.

Butylene Glycol is a very popular synthetic alcohol. It helps the product to absorb deeper and faster. It is also a solvent for other ingredients. As for the skin benefits, it helps to attract water and helps to make the skin softer.

Green Tea Leaf Extract is a great antioxidant often used in Korean skincare products. It contains EGCG - the most effective flavonoid. It makes the skin look fresh, fills it with vitamines, and helps to prevent aging. It also helps to lower inflammation.
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