Process for producing a cosmetic composition

1. A process for producing a cosmetic composition, comprising the following steps:

a) inkjet printing onto a basic cosmetic composition, using an inkjet printer, at least one fluid composition in an amount chosen so as to impregnate the basic composition over only a part of its thickness,

b) removing at least a part of the impregnated layer,

c) after removing the at least part of the impregnated layer, repeating step a) while optionally modifying the fluid composition inkjet-printed.

2. The process according to claim 1 , wherein the amount of the fluid composition printed in step a) is greater than or equal to 5 mg/cm 2 .

3. The process according to claim 1 , wherein the fluid composition is an ink.

4. The process according to claim 3 , wherein the printing is polychrome printing.

5. The process according to claim 3 , wherein the colour of the fluid composition printed in step a) is different from the colour printed in step c).

6. The process according to claim 1 , wherein the fluid composition comprises at least one compound chosen from the group consisting of cosmetic and dermatological active agents, the compound being contained in the fluid composition in a weight concentration of between 0.1% and 40%, relative to the total weight of the fluid composition.

7. The process according to claim 6 , wherein the fluid composition further comprises a visible marker that is either a dye or a fluorescent agent, the marker becoming invisible after application to human keratin materials, the process further comprising

detecting the marker present in the cosmetic composition after step b) and

determining the amount of fluid composition remaining on the basic cosmetic composition.

8. The process according to claim 1 , the printing being carried out in step a) according to a number n of printing passes that is between 1 and 10.

9. The process according to claim 1 , further comprising storing the identity of the printed fluid composition from step a) in an electronic memory.

10. The process according to claim 9 , wherein step c) comprises printing the fluid composition whose identity has been stored.

11. The process according to claim 1 , the printing being carried out according to information entered by a user or measured on said user's skin.

12. The process according to claim 1 , wherein the basic composition is a foundation or a lipstick.

13. The process according to claim 1 , further comprising generating information about the depletion of the impregnated layer caused by step b).

14. The process according to claim 1 , further comprising identifying the surface portion(s) of the basic composition where the impregnated layer is at least partially exhausted and storing the resulting information in an electronic memory.

15. The process according to claim 14 , wherein the printing in step c) only impregnates said surface portion(s).

16. A process for making up human keratin materials comprising

producing a cosmetic composition in accordance with step a) of the process as defined in claim 1 ,

performing step b) of the process as defined in claim 1 and applying the at least part of the impregnated layer to the keratin materials, and

performing step c) of the process as defined in claim 1 .

17. The process according to claim 16 , wherein the colour of the fluid composition printed in step a) is different from the colour printed in step c).

18. The process according to claim 16 , wherein the colour of the fluid composition printed in step a) is the same as the colour printed in step c), further comprising printing the fluid composition of step c) in an amount greater than the amount initially printed in step a).

19. The process according to claim 6 , wherein the at least one compound is chosen from the group consisting of fragrances, UV-screening agents, moisturizers, binders, and mixtures thereof.