It is a carbonated spa treatment generated with natural ingredients(sodium bicarbonate and citric acid)
When CO2 tablet encounters with water, it stated to generate carbon dioxide and turns water into carbonated spa.  

CO2 hydrotherapy offers a deep-cleansing bathing session and moisturizing skin-care with ; it also functions as a metabolism-booster that speeds up the self-healing process, provides relief from the skin disorders within one to two sessions.

When showering with Nagayu, the CO2 penetrate through the skin and enters into the blood-vessels.
This action causes the blood-vessels to expand and increase the blood flow;
it also changes the blood pH level and allows more oxygen released from hemoglobin for cell to absorb.
This biochemical reaction is referred as “Bohr Effect”. - Wikipedia: https://en.wikipedia.org/wiki/Bohr_effect

There are 4 ways to use Nagayu, each way has different purpose and benefit.


1. Bathing – Soak in the bathtub while have 3~4 CO2 tablets in it, it gives CO2 more time to enter into body, this therapy mainly target for faster recovery purpose.

2. Showering – Place one CO2 tablet into the Professional showerhead at the final rinse, a tablet last average 5 minutes till it fully dissolved. It is recommended to focus longer on the problem region for better result.

3. Wiping – Place one CO2 tablet into 1 liter of water, and soak up with a towel after the tablet dissolved. You can wipe on skin & coat for daily care.

4. Spray – Place one CO2 tablet in a spray bottle and spray on problem area for daily skincare.

The pH level that CO2 tablet generate is between 6.5~7.5, preferable with most dog’s skin and less chance to cause irritation.

Yes you can, it cleans much better than just water.

Depend on the skin severity level, if it's serious, we would recommend to shower with Nagayu every 3 days apart without shampoo.