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Can you oil paint over workable fixative that has been sprayed over charcoal?
Yes, you can. Use workable fixative or retouch varnish.
What is a good substitute for the fixative used on charcoal or pastel drawings?
Hair spray is a pretty good substitute.
Is it acceptable to use hairspray to fix pastels rather than fixative?
You should only use hairspray on work you don't intend to keep as it will make pastel brittle and it will yellow the paper over time. If you are experimenting with pastel and just doing quick sketches that you will work up into a proper painting later on then yes use cheap hairspray .If you are working on something you intend on exhibiting or selling I would invest in proper fixative to keep your colours true for longer and avoid unhappy buyers of your work.Ask yourself this question would you use pastel fixative on your hair ? No they are designed to do different things.
How do you dry cattails for autumn arrangements?
tie them together and hang them upside down. after they've dried, there is floral fixative u can spray them with to keep them from falling apart.
Are all salts salty?
All cooking salts are salty, not all salts are. Gipsum is a salt, but has no discernable taste at all. It is so bland that it is used as a filler and bulker in some food items, and its natural fire resistant properties make it perfect for drywall.
