Too bad, but that's the way it is. Maybe it's not really suitable for all skin types, most specially if you have sensitive skin. Better to consult a dermatologist first before trying out a new product.
I’ve been doing IPL laser hair removal for about a year now and I think laser isn’t really for everyone. If after like 4 months or so the hair doesn’t grow less, then maybe this treatment isn’t for you.
I also got my liquid touch weightless foundation just recently and I noticed that this isn't have an oil-free formula, so some degree of separation is natural.
Maybe you could give your bottle a good shake before opening each time.