Forehead Enhacement for 5cm Forehead

The short answer is that a coronal brow lift with the incision completely in your hairline will lift the hairline thereby expanding your forehead non hair bearing skin with hidden incisions. 

This can be accomplished quite well with a coronal forehead lift and there is a way to perform this without significant elevation of your eyebrows.

There are several techniques for elongating the overly low forehead. Some of them involve raising up of the eyebrows, which likely may not be desired, while there are other techniques that can avoid this.  It really is necessary for me to evaluate your photos to see what technique is best.

  Yes.  A forehead lift could be used to lengthen your forehead.  Whether or not this is recommended is impossible to say without review of photos or a consultation.

Raising the hairline can be done in several ways, surgically or non-surgically. For non-surgical options certainly laser hair removal is an option. However it's more effective for brunettes or noirs rather than true blondes because the laser targets pigment in the hair's root (blondes have little pigment so it's less effective). Waxing and plucking are not practical and short lived. For a permanent and very effective solution, a "coronal" lift may be used - this technique can raise the hairline by 1-2 cm. The down side is the long scar over the top of the head. However, if you're not bald or have thinning hair, the scar is well hidden and your result is permanent. On the other hand a high hairline and long forehead can be lowered with a similar surgery, though the scar is right at the hairline. Experience is everything so seek a board certified plastic surgeon to guide you. Good luck!