Toning is not always necessary. And ironically, the more expensive toners contain alcohol, which may be too harsh for some skin types. The purpose of toning is to restore the pH balance to the skin and remove impurities.
Again, don’t waste your money on expensive brands. There are effective and inexpensive toners that you will love.
Mixing a teaspoon of lemon juice with a half teaspoon of tepid water is my favorite toner since the lemon shrinks the pores. Also try witch hazel (available at drugstores). It’s perfect for normal to dry skin and leaves the face clean and refreshed without a dry or tight feeling.
Hydrogen peroxide mixed with a little water is the toner of choice for very oily skin.
I actually prefer these toners to their cosmetic counter cousins. That they won’t break the budget is just an added benefit. If you do prefer using an astringent to remove traces of dirt and for antibacterial agents, then get the most for your money by being sure that there is more alcohol than water in the product.
Stay away from toners containing fragrances, which can irritate the skin.