Clarins. RELAX BATH&SHOWER CONCENTRATE. Used in a warm bath or shower (37ºC/98.6º F), the essential oils fund in Tonic Bath & Shower Concentrate diffuse their natural aromatic properties. Soothing plants extracts promote softer, firmer-looking surface skin. Based on Coconut, the lightweight lather is gentle enough for even the most sensitive skin. Neutral pH, non-alkaline.