Ive tried about every kind of concealer on the market, and I've noticed something common to each one. I've been using concealers for about 2 years, and during these 2 years I've experienced the most hairloss in my life. I stopped using the products for 2 months, and the amount of hairloss decreased rapidly. The 2 months were kinda painful because I was so hooked on to concealers, and it was embarassing going anywhere. So I decided to save the hair that I have left, and I got a transplant last week. I dont have any scientific evidence to back that concealers clog the pores, but from my experience I really think they do...
