I took astaxanthin for a few months and noticed that it really improved my vision. Normally in winter I have trouble seeing the computer screen on gloomy days (and I stare at it for 8 hours a day), but astaxanthin made my vision really strong. I went overseas and stopped taking it, and now my computer vision is a bit dodgy again, so I resumed taking it earlier this week. Can't remember how long it took to improve last time.
I raved about it to my mum and gave her some capsules and she said it was great but couldn't name any specific benefits it gave her. Then she asked for more and commented that she preferred it to fish oil, which I explained it wasn't a substitute for.
I totally believe in it and will continue to take it. Can't comment on the sunscreen benefits of it yet but if it stops me burning I'll let you know after summer.
Other than the definite vision improvement, I haven't noticed any other benefits with it, but that's more than other suppliments have given me so I'm stoked.
I just read an article that shares several studies on an antioxident/ caritnoid called Astaxanthin. Studies showed that benefits included fewer fine lines, smoother surface, less under-eye puffiness and increased skin tone and elasticity... now get this... IN JUST TWO WEEKS! Take at least 2 mg (I am going to take 4 mg) every day. Because it is oil soluable, take it with food and your other oil vitamins for it to absorb best. It is also a great anti inflamatory, benefits eye health, and protects from sunburn!