I found a Reddit post stating that Uriage Hyseac-k18 contains 18% glycolic acid but I can't find a source outside of Reddit. Can someone confirm that or point me where to look? :
HYSEAC K18 URIAGE 40 ML
Compra en nuestra tienda online | Parafarmacia Online Madrid URIAGE
HYSÉAC - Uriage
Uriage Eau Thermale Hyseac K18 skin care product review
Hyséac K18 Crema Risanante de Uriage - iafstore.com
URIAGE HYSÉAC K18 SOIN DÉSINCRUSTANT 40ML - P Comme Para
Gel Limpiador Purificante Hyseac Uriage | 500 ml
Uriage K18 - Does it work? — Beautypeadia
Cosmética en Acción: “Hyséac K18” de URIAGE – una solución para pieles grasas con acné