Though extremely unlikely there may be limited sensitivity to Previse. Minor break outs might be attributed to the following ingredients: Leuconostoc/Radish Root Ferment Filtrate: Our radish root preservative is common to all Purify, Nutrify and Defend products. Bellis Perennis (Daisy) Flower Extract: The potent extract is common to all face Nutrify products. Prunus Armeniaca (Apricot) Kernel Oil: The hydrating extract is common to all Defend products, plus HydroBalm. Helianthus Annuus (Sunflower) Seed Oil: The hydrating extract is common to all Defend products. Recommended action: Step 1. Try only serum & lotion, Step 2. Try only serum.