Comet (cleanser) Comet is a powdered cleaning product and brand of related cleansing products. The brand was introduced in 1956 by Procter & Gamble, and was sold to Prestige Brands in 2001. Comet is now sold in North America and distributed in the United States by Prestige Brands.
Santorini to Athens: the ferries from the Santorini to Athens stop working by Oct 31 (but there are few connections in Oct). The 9:30 pm ferry to Athens takes 7 h 20 min to get to Athens.
My recommendation, assuming Santorini and Mykonos are on the top of your list is splitting 7 days between the two islands. You will want 2 or 3 nights in Athens to see the Acropolis and because you will most likely have to spend your first and last nights in the city.