This is probably one of the worst products I've tried that is a sun protector and suntan lotion in one. I usually buy sunblock, but there are times when I want to get a tan without having to worry about the UV rays destroying my skin. I know SPF 4 isn't as good as SPF 15, but then this should still block out a lot of the UV rays. I calculated it blocks out about 90% of harmful UV rays. It was great at giving you a good tan, but it has a nasty formula, too slimy and greasy in my opinion. Scent This is one of the worst smelling sunblocks I have ever used. It gives you a nice tan, but it's not worth having to smell this suntan lotion all day to get one. It's a little over priced for a lotion that doesn't have that high of an SPF, and one that smells nasty. Absorption This really wasn't very absorbing, no matter how much I rubbed it in. Also, it seem to leave a slimy film on my skin after I applied it. Longevity Banana Boat Deep Tanning with Green Tea Sunscreen needs to be applied about every two hours. Effectiveness For an SPF of 4, it's a decent sunblock. I got a good tan, but I did slightly turn red. I have a beige skin tone, so in my opinion if your skin is very white, this wouldn't offer very good protection from the sun. A person with ivory skin shouldn't purchase this product. Ease of Application Doesn't go on very well, and it leaves a greasy and sticky residue.