A powder composition for forming a cosmetic nail coating comprises an acrylic polymer or copolymer, and about 0.01 wt % to about 1.0 wt % of tertiary phosphine. The tertiary phosphine comprises three aryl groups, alkyl groups, or combination thereof. An example of the tertiary phosphine is a triaryl phosphine that may be substituted with 1 to 3 alkyl groups. A method of forming a cosmetic nail coating comprises the steps of (i) applying to a nail a cyanoacrylate adhesive； and (ii) contacting the nail with the powder composition. No application of an activator is necessary. The advantages of such a method include that fewer steps are needed in order to obtain a nail coating, the increased speed that the system cures, and a safer toxicological profile of the ingredients.
