Hello Susie,
Thank you for reaching out to us about this issue. That a brush would lose a few bristles upon the first few uses is not unheard of. Also, the way you wash and dry your makeup brushes can go a long way to help prevent shedding. First, make sure you don't go too long between washes because product build-up can be damaging to the bristles,, use a gentle shampoo and lukewarm water as hot water will dissolve the glue that holds it together. Lastly, pat the brush with a paper towel and lay it flat to dry.
If you feel there is something significantly wrong with your brush. We invite you to send us these pictures along with your receipt and contact details at customerservice@bareminerals.com so we can assist you better