Universal Age-Defying Concentrate & Free Gua Sha Let yourself be carried away by the ultimate effectiveness of this concentrated anti-ageing Super Serum and Gua Sha offered in this Anti-Ageing Face Serum Gift Set: - Super Serum [10], The Universal Age-Defying Concentrate 30 ml: skin behaves as if it were 10 years younger.** - Gua Sha – Used since ancient times in skincare and beauty rituals, the quartz pink Gua Sha is a facial massage tool reputed to have firming properties. Skincare formulated and produced in France. Gift Set made in France, 100% cardboard and 0% plastic and recyclable. ** In vitro test. HOW TO USE Sérum: Apply your universal age-defying serum in the morning and / or evening before your daily skincare routine: apply half a pipette of serum to your face, neck and décolleté. You can then apply your day or night cream.