What are these splinter like marks on our hands?!?!?

Question

A few days ago a friend and myself went to a play park. We swung on swings and touched the sand and now we have these small marks on our hands that look like splinters but I am sure they are not. He had them first, then I noticed I had them as well, about 2 days later. They don't hurt and one of his look like it is fading. Does anyone have any idea what these marks could be?

Answer 1

if its fading would not worry. could be small scratches or dirt inbedded in the skin.

Answer 2

perhaps caplillaries from under the skin. go to the doctor