Our skin lightening products are developed to be complementary to each other, so you'll get the fastest results pairing the Natural Lightening Serum with the SOS Intensive Skin Lightening Cream. The main difference between them is the ingredients. If you're looking to start out with just one first, we recommend using the Amaira Natural Lightening Serum for intimate and sensitive areas and the SOS Intensive Skin Lightening Cream for other parts of the body like face, underarms, and legs. If you’re looking to achieve the fastest results, we recommend using both in conjunction, first starting with the serum and then layering the cream on top. The New Brightening Accelerator Wash gently exfoliates and accelerates the lightening properties of the serum and cream for up to 5x faster results. We recommend using this before applying the serum and cream.