It is necessary for you to choose best suited moisturiser for you skin type as it will help you deal with your skin problems easily.
Dry skin
For dry skin you should opt for cream or milk-based moisturisers which contains nourishing formula that helps your skin to hydrate.
Oily skin
Oily skin does not require a lot of hydration so light weight moisturiser works for such skin type. Water or gel based are well suited for oily skin type.
Combination Skin
Combination skin type does not require a lot of hydration but at the same time shouldn't be watery. It must have a balance of both.
Sensitive skin
Sensitive skin should avoid moisturisers which has harsh chemicals, instead, use ingredients like aloe vera in it.
How to apply
Always apply it in upward direction on damp skin after cleansing your face. You can apply it twice a day, in morning and at night.