To get rid of keratosis pilaris on upper arms you can use the lactic acid moisturizer or the body lotion. The way the lactic acid works is that it is a humectant which means that increases the amount of water in the in the skin and thereby it makes it soft and very baby like. Lactic acid is a form of alpha hydroxyl and is generally considered safe than the glycolic acid however that said there are not many companies which make the lactic acid moisturizers as compare d to the regular moisturizers.
Now for people who have the keratosis pilaris the bets thing to do is to keep the skin hydrated as ell as make sure that they was the skin with very mild ingredient. That is where the lactic acid comes in very handy.
There are some of the famous brands of the lactic acid moisturizer and these are
Upsher-Smith AmLactin Moisturizing Lotion Fragrance Free 8oz.
AmLactin Moisturizing Body Lotion
AmLactin Moisturizing Body Cream
This product can Amylactin has a high concentration of lactic acid (about 12% ) and is considered to be very effective.
Do not use the lactic acid body lotion or moisturizer if you are pregnant or breast feeding and even if you have any allergies or you are taking any dietary supplements.
The lactic acid is generally of very low strength as compared to the glycolic acid moisturizer and the salicylic acid moisturizer and that will mean that people who have sensitive skin can safely use the lactic acid moisturizer
In fact the lactic acid is the main ingredient for the diaper rash cream from Johnson and Johnson as the babies generally have sensitive skin so using lactic acid is considered to safe than any other type of ingredient for the diaper rash cream.