Keratosis Pilaris

I’ve noticed these little pimples that look like goose bumps spread out across the sides of my stomach and waist, my upper and lower arms (around the elbows), my back, my thighs, and possibly my face. Some are flesh colored and some are red and look like pimples. How do you get rid of these? I’m very insecure about my skin now and every time I see a bump I freak out. I’m not sure if my vitamins or hair shampoo is causing this but I’ve been exfoliating, moisturizing, and using cerave tough and bumpy lotion and it’s not doing anything. Asking for advice :(