Water based, non toxic and fast drying, this easy to use filler is ideal for nail holes and blemishes in wood and MDF. Use directly from the tub or thin with up to 10% water to repair minor imperfections or fill grain. May be tinted using Jo Sonja's artists' colours or painted over when dry and sanded. May also be used to repair damage to painted items. Pre tint or overpaint as necessary.