I purchased this in the travel size in case it didn't agree with my skin. I am new to balanceme. I used it last night for the first time, along with other products in the hydration travel kit. Wow! This is the best serum I have ever used. It is so hydrating and my dry, thirsty skin loved it. After 1 use my skin this morning looks smooth, plumped up as it must have desperately needed all of the moisture the products gave me. I will be ordering the full size when I see this one running out as I already know I don't want to be without it morning and night. This should last a little while tho as you only need 1 or 2 drops at a time for fantastic coverage. I want my skin to continue to look as nice as it does this morning esp as I'm not wanting the heavy full coverage make up look anymore now my skin is starting to show signs of ageing. This is such an affordable way to try these amazing products. I love it already. Very happy lady to have finally found something my dry & sensitive skin enjoys.