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Ellie Jakeman
August 17, 2021
Hi Owen, if you have created a thick impasto style painting as Bob Ross does in his videos, and used wet on wet techniques you will need to wait at least 6 months or more before your painting is ready to varnish. Your painting may take even longer, up to a year! Oil pigment is suspended in linseed oil and dries slowly through an oxidization process, this basically means the pigment and linseed Oil hardens when they react to oxygen. Your painting may feel touch dry but it must be fully cured before varnishing. If you varnish too soon you will prevent the oil and pigment from fully drying and it will remain tacky.
Varnish will prevent your oil paints from discolouring, and prevent any other airborne pollutants damaging your work, however your painting must be completely dry before applying varnish. Winsor & Newton Artists’ Oil varnish have a great range of Matt, Satin or Gloss. It really is a matter of personal taste.SKU 3039733 Winsor & Newton Artists’ Oil Varnish – 250ml
Hope this helped.