Decleor Aromessence Strengthening Serum Salon Size 50ml £34.70 100% Natural with Essential Oils. Aromessence Ongles is a pure concentrate of essential oils for optimum nail care. This precious oil softens cuticles, strengthens nails, nourishes, protects and gives a healthy sheen. It can be used with Nourishing and soothing hand cream and foot cream. The daily application of this precious treatment results in more beautiful and perfectly cared for nails. To use: Apply to the cuticle using the brush and massage in, stretching each finger outwards.