You should try:

Water and Baking Soda

Combine 2 tablespoons of each baking soda and water and mix well. Then, apply the resulted paste on your face and leave it to dry for 15 minutes. After the mask tightens, rinse with cool water.

The natural remedies listed below are also very effective and the positive side of these natural remedies is that they can be made of only 2-3 natural ingredients.

Cucumber, Lemon and Rosewater

Start by peeling a cucumber and then crush its flesh. Then, add a teaspoon of rosewater and a few drops of lemon juice. Put the resulted mixture in a clean cloth, fold it and then apply it to your face. At the end, wash with cool water.

Egg White and Lemon juice

Prepare your own natural face mask with a few drops of lemon juice and two egg whites. Apply the mask on your face and let it dry for a few minutes. Then, wash with cool water. This mask will help you tighten your skin pores, but also will help you remove dead skin cells and oil.