― ♥ H&M Nail Polish in Why So Blue. ∙ Hey Dolls :) ∙ Why So Blue is a navy blue nail polish with blue and purple shimmer. I didn't experience any streaking and it was opaque in just two coats. ∙ The nail polish cap is really big, but I really like that about these nail polishes from H&M. I feel that they give me more control over the brush and the application of the nail polish. The name of the nail polish is also on top of the nail polish cap, which makes it so much [...].