Complex Hydrogel for Weight Loss 500 ml Bath and hydro-massage gel, with iodinate algae extract, used in the anti-cellulitic treatment. It has got a very dense composition. The recommended time for laying in the bath tum should not be longer than 20 minutes, in water at about 37 C degrees. You can also use the hydro-gels from the Ardes Cosmetici line with the following effects: elasticising, tonifying, moisturizing, emollient, relaxing.