Unopened, well-formulated cosmetics can remain stable for a couple of years at room temperature, says Ni'Kita Wilson, a cosmetic chemist at Cosmetech Laboratories in Fairfield, NJ. But the clock starts once you bring a product home and open it.
How long does it take sperm to reach the egg? I would say at least a couple of hours, but it could take up to three days. Depending you your body and where the egg is in the cycle. The sperm that will be able to fertilize the egg will leave the cervix, at the most, 30 minutes. It does not take 3 days for the sperm to get to the fallopian tubes to ovulation.
How long does it take a sperm to penetrate an egg? It takes a few hours to reach it, and then about 20-30 minutes for a group of sperm to break down the outer membrane of the egg so one can fertilize it. Egg and sperm cells are produced in? Egg is produced in the ovaries in females and sperm in testes in males.