Why did my chalk paint matte clear coat start turning yellow?

I'm guessing the cheapest thing is repaint

Hello Louise! I am not sure what your project was using chalk paint and clear coat. Whether it is a big furniture item or small. I am assuming you used white chalk paint. You can try to sand off the clear coat and use a water based poly on your project. Water based poly will not yellow over time. If you want to repaint with chalk paint you can go over your clear coat. You might want to lightly sand and clean off the dust before you repaint.

HI Louise,

I agree with the others that you can repaint after sanding the sealer. Clear coat is kind of a generic name so I'm wondering if you used a polyurethane? If so, that might be why it turned yellow. Polyurethane is known to turn yellow over time. I'd suggest using a latex paint or if you really want to use chalk paint, seal it either with a wax or a polyacrylic. Wishing you the best.

Hello there,

Yes, use a Clear Wax to finish or you can get a Varnish that does not turn yellow from a craft shop. Sand 0ff varnish or just start again!