How to close open pores permanently

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Regarding your question

What is the treatment of largly opened pores?

Do not use solid soap or other skin care products that clog the pores.
Ingredients that keep the soap in its solid form can clog the pores.
You should also avoid products that contain thick or fatty creams especially if you have oily skin.
Only use a mild detergent that is soluble in water and avoid products that cause increased drying
Avoid scrubbing and brushing with harsh bristles.
You can not rub blackheads cruelly so this only makes the skin dry and start peeling, creating more dead skin that can open the pores.
Do not go to bed without washing your make-up
Peel the skin with 2% salicylic acid lotion so that it is placed on the surface of the dead skin which will  accumulate in the pores, stretch out, and turn into black heads.
Use products containing niacinamide. Once the follicles extend beyond normal size, niacinamide can help to tighten the face by enhancing the quality of the natural skin. RESIST 10% Niacinamide Booster contains anti-oxidants and tonic by niacinamide
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