Hi there. The normal amount of hair to lose is approximately 100 hairs a day. If you are concerned that your hair loss is above that, then you should check your diet and your iron level.
Conditioner is meant for the hair and should not be applied onto the scalp as it can create a build up. The purpose of conditioner is to remove static, to add shine and give manageability to the hair. It is a necessary part of the hair care regime.
If your scalp is flaking, I would recommend that you use a shampoo such as the Philip Kingsley Itchy/Flakey and possibly the Philip Kingsley scalp treatments.
For a heat protector, if you have fine hair, you can use the Serioxyl Heat Protector and use the rest of the range to increase and stimulate your hair density . If you have normal to thick hair, you can use the Morocconoil Heat Protection Spray.