Winsor & Newton3030937 Flow Improver, Professional Acrylic Medium, 125ML, 4 Fl Oz

Fantastic quality flow improver for acrylic paints.I have been using this acrylic flow improver to thin Citadel paints for minature painting.The flow improver cuts the paint in a much different way to tap water, breaking the surface tension that can hinder paint once on a surface. There is no color shift and paints layer beautifully, not having to worry about mineral deposits in tap water causing chalkiness once paint has dried.You only require a very small amount to mix, so a bottle of this size for minuture painting should last a considerable amount of time.

Deliberately false advertising. The 237ml in the title is a complete lie. You pay an overpriced amount for just 125ml. Only option for reimbursement is to return the item, which isn't worth the time, money, or inconvenience. Steer clear.

Superb. I use this diluted to add to my paint (20-30% flow improver in water) for doing fluid / poured acrylic paintings, and it suits the purpose well. For the price it feels like I’m going through the stuff a little quick, but given the process and sheer amount of paint needed for pouring acrylic I’ve accepted it as necessary to get the results I need.

Wasn’t sure what to expect as never bothered with extras like this before but it’s actually really helpful. Does what it promises and a little goes a long way, so it’s good value for the money invested. A*+

I find it difficult to mix with water. The top of the bottle makes it difficult to pour it without splashing the content all over the place. W&N could change the top of the bottle with the ones that has a little hole on top, which would help pouring the liquid in drops. I can’t figure out what ratio of water to mix it with because I use small amounts of it and I don’t have lab equipment therefore instructions on the bottle are useless to me. If I could do x amount of drops, it’d help with mixing with the correct x amount of water drops. However I like the product itself, it’s just the bottle design and vague instructions that need to be improved.