What do you mean by antioxidant

How do I know # 3 | Antioxidants

Hello Shenja,
First of all, I find your blog and your YouTube videos really helpful and informative! Great praise!
Thanks to you I started to venture into the ingredients jungle, but unfortunately I'm still pretty much at the beginning and I urgently need a new night cream. A cream appealed to me a lot, but I could use advice as to whether it is worth the money (15 euros). The ingredients are:
Aqua, Ethylhexyl Methoxycinnamate, Aloe Baradensis Leaf Extract, Glyceryl Stearate, C12 = 20 Acid PEG = 8 Ester, Benzophenone = 3, Decyl Oleate, Propylene Glycol, Cetearyl Ethylhexanoate, Caprylic / Capric Trilglyeride, Glycerin, Tocopheryl Acetate, Sodium Sodium Chondroitin Sulfate, Carbomer, Triethanolamine, Cetyl Phosphate, Dimethicone, BHT, Tropolone, Imidazolidinyl Urea, Caprylyl Glycol, 1,2 = Hexanediol, Parfum (fragance). Contains Benzophenone = 3. Contains sunscreens.

Either it should be the one given here or the Egyptian Magic, which should also be really great. Have you heard of her? Maybe both will be
I would also like to know if you have a book tip regarding ingredients?

I would be very happy if I got an answer and I hope it doesn't matter that I asked that below. But thought it might fit somewhere.

Thank you in advance and have a nice weekend!