After my month-long (and tearful) honeymoon with the Coppertone Clearly Sheer. I ditched it for a proper sunscreen to welcome the blazing sun. As American brands are entering into the phase of liquid and light-cream sun products, the weightless gel-cream formula has been around in Japan/rest of Asia for at least 3 or 4 years. Sunkiller Perfect Water Essence is a example of it.
As the name suggests, it's a (primarily-chemical) suncreen with a watery gel formula. The pale yellow gel feels light, weightless and cooling once spread (it's probably the alcohol but it's not strong enough to sting) and gives a lightly moisturizing/emollient feel to the skin that's not sticky. Thanks to the presence of some TiO2, I do get a tiniest bit of white cast, to cover my acne marks. The chemical formula is also much easier to remove than those mainly-physical ones.
Ingredient List is available at Ratzilla Cosme. Nope, I can't even quote anything...
Since it's virtually undetectable, it's a great nothing-base underneath makeup and doesn't make powder blush patchy/sticky (if you are the kind who doesn't want to deal with foundation). For adding concealer on top, I prefer a pasty formula like Shiseido Geisha Cast, which does a better job sticking to the...paste and provide some coverage (when my face isn't flaky).