I kept to use it in the morning and at night after cleansing and toner.

The texture is light and can be easily to apply smoothly. I find the skin tone turns more consistent and lightens after continue use of around a week. It's rewarding when I see the dark spots turns less visible to people.

While it works well to skin color more consistent, I would recommend apply it with sun protector to prevent formation of dark pigment. The lightening effect would be more effective.

One of the advantage is its another function of moisturizer. So I don't need to use hydrating essence. I usually use with hydrating gel after applying the Olay essence to enrich the moisturizing effect. I think both whitening and hydration effect are satisfactory.