INCI declaration of the ingredients:

Aqua, Butylene Glycol, Triethyl Citrate, Citric Acid (and) Silver Citrate, Sodium Hydroxide

Further explanations of the ingredients:

Aqua:
Water. It accounts for around 65% of the weight of the human body and is therefore of fundamental importance for bodily functions, including those of the skin. In many cosmetic products (aqueous solutions, cleansers, emulsions), water is the ingredient with the largest proportion of the formulation in terms of quantity and forms the basis of the aqueous phase in emulsions. Water is a good solvent for polar (hydrophilic) substances such as alcohols, water-soluble vitamins or salts. For use in cosmetic products, the water used is generally pre-treated to remove microorganisms that could lead to spoilage of the product or dissolved salts that may impair the stability of emulsions or gels (sterilization and desalination).

Butylene Glycol:
Solvent with moisturizing effect on the skin, very good compatibility, should be preferred to propylene glycol in products used daily

Triethyl Citrate:
Citric acid triethyl ester. Inhibits the growth of sweat-decomposing bacteria, very well tolerated by the skin, contained in many fruits.

Citric Acid (and) Silver Citrate:
Compound of silver and citric acid, effective against (odour-forming) bacteria and other microorganisms.

Sodium Hydroxide:
Sodium hydroxide. Used to adjust the pH value of cosmetic products. Sodium and hydroxide ions are identical to the body.