My hair always suffers when its cold and don't know how to deal with it. I have a dry scalp resulting in dandruff and my hair becomes very thin. I have used a shampoo called 'Polytar' previously and it actually made it worse! Now I massage my scalp everyday because its meant to promote circulation and also massage olive oil onto my hair about 15 mins before I have a shower and use a normal conditioner but it hasn't helped much. Can someone help me as to what my next step should be, thanks.