It could just be a bit of dandruff, or dermatitis or even possibly psoriasis. if they look like flakes or scales, you could try using a bit of warm olive/baby oil (I prefer olive oil as there are no other chemicals) and rub it into his scalp and leave for a few hours/overnight, then give a light, gentle comb to loosen all the scales off and then a really good wash with shampoo to remove the oil. Does he complain that it is itchy at all? If it is then it could be a dermatitis or psoriasis. It possibly wouldn't hurt either to get a Dr to check it out JIC it is a fungal infection as well. If you don't think it warrants seeing a Dr, go to your pharmacist as they should be able to advise you on what it is and give you an over the counter cream or recommend a shampoo/lotion. If it is beyond their expertise then they will say to take him to your Dr.