You may be having milia.
You would also like to rule out Vitiligo.
Small whiteheads that look pearl-like and don't seem to come out of the facial skin are called milia. Milia form due to accumulation of dead skin cells below the epidermis.
Causes Of Milia
Our skin sloughs off every day. The dead skin cells are removed and fresh skin cells take their place. When the dead skin cells don't easily get out they accumulate and form milia. Milia is not a disease but accumulated dead skin cells that are not coming out of the skin surface. This can happen due to thick epidermis or other reasons.
check out Vitiligo- http://www.doctorgoodskin.com/ds/vitilig…