Cosmetic compsns. for topical use, esp. for protecting the skin and/or hair from the effects of light, comprise metal oxide nano-pigments (i.e. pigments with an average particle size of 100 nm or less) and a mixed alkali metal and/or alkaline earth metal silicate in an o/w emulsion carrier with an average droplet size of 100-1000 nm. Also claimed is a process for preparing a compsn. as above, comprising adding the silicate to the nano-pigment-contg. carrier after or during emulsion formation. Also claimed is a process as above for stabilising the nano-pigment contg. emulsion. Also claimed is a cosmetic treatment process for protecting the skin and/or hair against UV (esp. solar) radiation, comprising applying a compsn. as above.
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