A facial cleaner enables you to clean your skin without removing essential, healthy oils. Your cleanser type may vary with skin type. For example, a foaming liquid is suggested for those with oily skin as this helps break down dirt and excess sebum from pores.
A toner helps you balance your skin complexion by specifically targetting skin concerns like dryness, redness and hyperpigmentation.
The purpose of a moisturiser is to hydrate the skin, and everyone does need it. However, the texture of your moisturiser will depend on your skin type. For example, a cream is often recommended for dry skin as it adds moisture to the skin, and preserves more water as well.