Holbein adds no opaquing agents to their gouache colours.
Holbein : Artists' : Gouache Paint : 15ml : Primary Set of 5
Holbein : Artists' : Gouache Paint : 15ml : Primary Yellow
Holbein : Artists' : Gouache Paint : 15ml : Primary Black
Holbein : Artists' : Gouache Paint : 15ml : Primary Magenta
Holbein : Artists' : Gouache Paint : 15ml : Primary White
Holbein : Artists' : Gouache Paint : 15ml : Geranium (Primary)
