Coupon Code August 2025: Up to 20% OFF at Formula Fkx

Those who are blessed with curly hair owe that fact to the cross-section of their individual strands of hair. Straight hair has a symmetrical, circular cross-section, with no tendency to curve, but a hair with an oval or asymmetrical cross-section will naturally curve about its weaker axis. As such a hair grows, it takes the form of a spring. The tighter the curl, the springier the hair. Waves, curls, coils. Formula Fkx is the mathematical formula, known as Hooke's Law, that describes how a spring reacts when a force is applied to it. Formula Formula Fkx is the perfect name for the formula they've developed to achieve and maintain the spring in your curls.

To maximize your savings, apply your coupon code before taxes and shipping costs are added. This can help you get the most out of your discount.