Will this clean of a haze on acrylic lenses? Have tried soap and toothpaste and it does not work.

Sound like scratches not hase . DON'T use toothpaste. It's too abrasive . Polywatch might work . Use a small dremal at the lowest speed test one spot gently very light pressure . Otherwise go too your eye doctor's or walmart eye care ..

Will this work on dark lens sunglasses?

No, avoid using on any glass. Especially treated glass, like Eyewear. It will ruin it. This is made for plastic lenses.

Is there a link to directions?

Use a cotton ball and rub in circular motion on the spot you want to fix for a few minutes and use a bit of pressure as well. Also it might take a few applications to get best results. That’s how I have used this product and it has worked pretty well.

Does this work with an Apple Watch 7?

it literally works on everything that has a screen like a cell phone or any Apple Watch. My sunglasses had a few small scratches and it fixed it. Most important thing is you have to do MULTIPLE APPLICATIONS. It took like 5-6 times but I was shocked how well it works. Use a cotton ball or q-tip and elbow grease!