[Product Question] Is it necessary to use both CeraVe AM and PM moisturizers?

Beauty Tips For Body Care
I'm not super educated on all the ingredients, but they seem really similar aside from the AM moisturizer's sun protection. I've been using the AM in the morning and some nights, but I'm not sure if it's worth it to also buy the PM for night use. Have you noticed any difference in using the PM moisturizer at night instead of the AM moisturizer? Thanks!CeraVe AM moisturizer:Active Ingredients: Homosalate (12%), Octinoxate (7.5%), Octocrylene (2%), Zinc Oxide (3.5%).Inactive Ingredients: Purified Water, Niacinamide, Behentrimonium Methosulfate and Cetearyl Alcohol, Glycerin, Aluminum Starch Octenylsuccinate and Boron Nitride, Dimethicone, Ceramide 3, Ceramide-6-II, Ceramide 1, Cholesterol, Hyaluronic Acid, Phytosphingosine, Hydroxyethylcellulose, Disodium EDTA, Sodium Lauroyl Lactylate, Methylparaben, Propylparaben, Carbomer, Xanthan Gum.​CeraVe PM Moisturizer:Purified Water, Glycerin, Caprylic/Capric Triglycerides, Niacinamide, Behentrimonium Methosulfate and Cetearyl Alcohol, Ceteareth-20 and Cetearyl Alcohol, Ceramide 3, Ceramide 6-II, Ceramide 1, Phytosphingosine, Hyaluronic Acid, Cholesterol, Dimethicone, Polyglyceryl-3 Diisostearate, Potassium Phosphate, Dipotassium Phosphate, Sodium Lauroyl Lactylate, Disodium EDTA, Methylparaben, Propylparaben, Carbomer, Xanthan Gum
Girls Blog 2015
Submitted by SunflowersOrDaisies