a unique all in one serum [SEP] i was in the cosmetics and skincare business for years and am very ingredient conscious the makeup of this serum is truly impressive it is also unusual to find one with vitamin c and retinol together in the same serum this was my first time using this product and i was trying a new moisturizer as well so i did a controlled study i washed my face and applied the serum alone my face turned very red and hot like a bad sunburn i washed it off applied straight aloe vera gel to calm my skin and left it on overnight by the next morning all was well so i cleansed my skin as usual and applied the new moisturizer which was also by elrique naturals and the same thing happened needless to say both products were extremely uncomfortable to use comparing the ingredients i do not see anything listed on either product that would cause this i first suspected niacinimide vitamin but it is not listed it is possible that the vitamin c was too strong for my skin but there is none in the moisturizer i have no issues with retinol so that is not it the reasons why elrique naturals did not agree with my skin will have to remain a mystery