Literally thousands of skin care products use vitamin A and vitamin A derivatives to treat acne. And we all know that vitamins are vital. But your baby needs vitamins that work from the inside out.
These are usually not from supplements, and never from infant skin care products.
Vitamin A, in particular, is essential to the infant's skin. It helps the skin grow so that pores stretch open. It greatly reduces the risk of viral infections of the skin. It helps babies who are exposed to measles survive this once-common childhood illness with far fewer complications.
But babies don't need vitamin A if they are breastfed, and even if do need a vitamin A supplement—which is something you give in a 50,000 IU dose no more often than twice a year (overdosing vitamin A also causes acne)--they don't need retinol, retinaldehyde, retinyl palmitate, or other vitamin A products applied directly to the skin. These products are irritating to infant skin and cause more harm than good.
Breastfed babies sometimes don't get enough vitamin D, but giving your baby vitamin D drops or cod liver oil (the old fashioned remedy for vitamin D deficiency that still works) won't change the outcomes in acne.
What about all the other vitamins for baby acne? If your baby was a preemie, or if you are breastfeeding, chances are your pediatrician has already made sure your baby is getting needed vitamin supplements. Otherwise, cleansing makes a lot more difference in clearing up baby's blemishes than nutritional supplements.