Locking a layer will prevent you from making any changes whatsoever to your layer. Alpha Lock will still allow you to draw or erase on a layer, but only on already created elements. When you lock a layer, you won’t be able to make any changes to it at all.

What does procreate Alpha Lock do?

Alpha Lock gives you the ability to draw within that layer’s shape; this command is ideal for drawing within the shape’s boundaries. While many rely on the Alpha Lock command to apply textures, shadows, and highlights, Alpha Lock is extremely useful to quickly change the layer’s fill colors.

What are locking layers?

Locking layers reduces the possibility of modifying objects accidentally. Objects on locked layers appear faded and a small lock icon is displayed when you hover over an object on a locked layer. You can set a fade level to locked layers. This serves two purposes: You can easily see what objects are on locked layers.