The belt is to help support the abdomen muscles as they tend to separate as pregnancy progresses.You should ideally wear the belt when you are upright hence as many hours as you feel comfortable. The black marks are probably the stretch marks which will fade with time.

Informative meghana and harneet.. Thx dears.

don't use belt if you are not comfortable and it will not help in reducing tummy also .. once uterus comes to normal size automatically tummy will reduce I mean pre pregnancy size. it's a myth tying cotton saree, dupatta or using belt will reduce tummy . As many said I too used belt for 2 or 3 months it just helped with back support that's it it didn't help in reducing tummy.

its only for back support, pls dont expect any tummy reduction or weight loss with it. give ur body time. u just had a baby. 9 months of prebnancy changes lot of things in it.. it wont fix in one day or one month.. body takes upto 6-8 months to get back to pre pregnancy state hormonally. as of now enjoy this new phase,  eat healthy and remain stress free.

How to get back normal skin tone???? Having black patches around tummy area n Abdomen..