I am so sorry to ask this as I am sure you will say no but are you sure that the hair isnít breakage from over use of heated appliances? ...More >
If it definitely isnít that I can only suggest it must be a hormonal, did you start any kind of medication, contraceptive or even supplement? If you didnít then all I can go back to is natural hormonal change, hopefully it will balance out, if not perhaps have a change of hairstyle that incorporates or removes the hair. Or perhaps speak to a beauty therapists that maybe able to wax your hairline?
Really good luck