A process for treating, especially is for washing, the hair, including applying at least one cosmetic active ingredient to the head of hair using, a dispensing device. The dispensing device including a hand piece preferably having at least two nozzles, the jets of which collide with one another, to form a mixture of water and of the active ingredient, this mixture originating from a collection basin arranged below the user's head.

A process for treating, especially is for washing, the hair, including applying at least one cosmetic active ingredient to the head of hair using, a dispensing device. The dispensing device including a hand piece preferably having at least two nozzles, the jets of which collide with one another, to form a mixture of water and of the active ingredient, this mixture originating from a collection basin arranged below the user's head.

A system for washing the hair, including a first reservoir for receiving a first liquid (L1) constituted by or comprising water, a second reservoir for receiving a second liquid (L2) including a treatment product diluted in water in an amount of less than or equal to 2.5% by weight relative to the total weight of the second liquid (L2), a shower head with a supply rate of between 0.3 and 5 L/min, configured to deliver a jet of droplets onto the hair. The shower head is further supplied with liquid, taken exclusively from one or other of the reservoirs, with an overpressure.

A system for washing the hair, including a first reservoir for receiving a first liquid (L1) constituted by or comprising water, a second reservoir for receiving a second liquid (L2) including a treatment product diluted in water in an amount of less than or equal to 2.5% by weight relative to the total weight of the second liquid (L2), a shower head with a supply rate of between 0.3 and 5 L/min, configured to deliver a jet of droplets onto the hair. The shower head is further supplied with liquid, taken exclusively from one or other of the reservoirs, with an overpressure.

System for washing the hair, including a first reservoir for receiving a first liquid (L1) constituted by or comprising water, a second reservoir for receiving a second liquid (L2) comprising a treatment product diluted in water in an amount of less than or equal to 2.5% by weight relative to the total weight of the second liquid (L2), a shower head with a supply rate of between 0.3 and 5 L/min, configured to deliver a jet of droplets onto the hair, and a means for supplying the shower head with liquid, taken exclusively from one or other of the reservoirs, with an overpressure.

System for washing the hair, including a first reservoir for receiving a first liquid (L1) constituted by or comprising water, a second reservoir for receiving a second liquid (L2) comprising a treatment product diluted in water in an amount of less than or equal to 2.5% by weight relative to the total weight of the second liquid (L2), a shower head with a supply rate of between 0.3 and 5 L/min, configured to deliver a jet of droplets onto the hair, and a means for supplying the shower head with liquid, taken exclusively from one or other of the reservoirs, with an overpressure.

A liquid recycling kit for hair treatment is provided. The liquid recycling kit includes a liquid guiding device to be worn on one head and a liquid collecting device detachably coupled to the liquid guiding device. The liquid guiding device includes an inner wall and an outer wall collectively defining a guiding channel. The liquid guiding device receives a hair treatment liquid dripping from the head and guides the received hair treatment liquid to at least one rear outlet of the liquid guiding device by gravity along the guiding channel. The liquid collecting device includes a container wall defining a collecting space located under the rear outlet of the liquid guiding device. The collecting space receives the guided hair treatment liquid flowing out from the rear outlet of the liquid guiding device for recycling the hair treatment liquid.

The bed hair-washing station is configured for use with a bedridden patient. The bed hair-washing station is configured for use in washing the hair of the patient. The bed hair-washing station is a portable structure that rolls to the bed of the patient. The bed hair-washing station comprises a basin, a source system, a drain system, and a cart. The basin, the source system, and the drain system attach to the cart. The basin receives and controls the fluid flow required to wash the hair of the patient. The source water provides fresh water for use in washing the hair of the patient. The drain system removes and stores the gray water generated by washing the hair of the patient. The cart is a wheeled structure that allows the bed hair-washing station to roll to the patient.

The bed hair-washing station is configured for use with a bedridden patient. The bed hair-washing station is configured for use in washing the hair of the patient. The bed hair-washing station is a portable structure that rolls to the bed of the patient. The bed hair-washing station comprises a basin, a source system, a drain system, and a cart. The basin, the source system, and the drain system attach to the cart. The basin receives and controls the fluid flow required to wash the hair of the patient. The source water provides fresh water for use in washing the hair of the patient. The drain system removes and stores the gray water generated by washing the hair of the patient. The cart is a wheeled structure that allows the bed hair-washing station to roll to the patient.

A process for treating, especially for washing, the hair, including applying at least one cosmetic active ingredient to the head of hair using a dispensing device. The dispensing device including a hand piece preferably having at least two nozzles, the jets of which collide with one another, to form a mixture of water and of the active ingredient, this mixture originating from a collection basin arranged below the user's head.