Listmania!
Helpful Keratosis Pilaris Lotions
By an Amazon.com customer
Complex 15 Therapeutic Moisturizing Lotion - 8 fl ozComplex 15 Therapeutic Moisturizing Lotion - 8 fl oz
Buy new: $8.19
Usually the most affordable on the list
Carmol 10 - 1 bottleCarmol 10 - 1 bottle
Buy new: $21.50
Contains 10% Urea as Carmol
AmLactin Moisturizing Cream, 4.9 OuncesAmLactin Moisturizing Cream, 4.9 Ounces
Buy new: $14.95
A Lactic Acid lotion in cream form.  My derm prescribed this to me and it's what I currently use with great results.
AmLactin 12% Moisturizing Lotion - 8 ozAmLactin 12% Moisturizing Lotion - 8 oz
Buy new: $16.25
A Lactic Acid lotion (same as above).
AmLactin Moisturizing Body Lotion, 14.1-OuncesAmLactin Moisturizing Body Lotion, 14.1-Ounces
Buy new: $27.98
Lactic Acid lotion (bigger bottle).  Also not listed: MD Formulations 14% glycolic compound ($35/6oz), Aqua Glycolic lotion ($17/6oz), Acid Mantle Cream ($15/4oz), and Complex 15 lotion ($7/8oz).