I love that this product doesn't make my baby break out in a rash. From birth to 9 months, we used Similac - soy based (the red one) and I was so happy to find that the Similac Go and Grow - soy based - doesn't cause any of the negative repercussions that other formulas did. It's so nice that there is consistancy between the regular similac soy based formula and the Go and Grow variety! Great product for my sensitive baby!