Colored or colorless aqueous nail polish containing particles
of polyester-polyurethane which are anionic in dispersion,
and in which the particle size is between 2 and 40 nm, and
the hardness (as measured using a Persoz’ clock) of the ?lm
produced after drying for 24 hours at 30° C. and 50%
relative humidity from a 300 tun-thick layer of an aqueous
dispersion of said particles containing 28% dry matter is
between 50 and 300 seconds.