Potassium Carbonate & Sodium Bi-Carbonate Solution (Lye Water)

What the brand says

Sold as “Potassium Carbonate & Sodium Bi-Carbonate Solution (Lye Water) - 20.3fl oz (Pack of 2)”

Koon Chun Potassium Carbonate & Sodium Bi-Carbonate Solution (Lye Water) - 20.3fl oz