Brief Answer:
antidandruff shampoo and topical steroid

Detailed Answer:
Hello. Welcome to ask the doctor.
I have read your query.
I understand your concern.
As per details, there are following main possibilities for your symptoms :
1 ) Scalp psoriasis - it is characterised by coarse white colored scales on background of erythema involving scalp.
2) Seborrhoeic capitis- it is characterised by greasy yellowish fine scales deposited in scalp.
In both cases, anti dandruff shampoo containing ketoconazole is advised to be used twice a week .
In Scalp psoriasis, topical steroid in lotion form like halobetasol is prescribed.
I will advise you to visit your doctor so that he can examine you and give you prescription.
You can share my opinion with him.
I hope it helps.
Stay healthy.

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Brief Answer:
yes you can use

Detailed Answer:
Aloevera is natural remedy. There is no harm in using it for scalp and body. You can safely use it.
Thanks

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