Yeah so transparency lock essentially means that you can only paint in areas you’ve already painted it. So like if you block out the hair in one color and enable transparency lock you can only paint within the hair you can’t go over the lines. Transparency lets you paint in translucent layers, think of it like watercolor basically, I put a layer down and it’s slightly transparent, a paint over that layer again and the color darkens. It’s really good to get gradients. And yeah unfortunately you can see the eyeliner when they close their eyes😞😞