Frequently Asked Questions

General Questions:

Great question! F=kx is the mathematical formula, known as Hooke’s Law, that describes how a spring reacts when a force is applied to it. We also considered it the perfect name for the formula we’ve developed to achieve and maintain the spring in your curls.

FormulaFKX is headquartered in Lancaster, PA, and all Formula FKX products are produced in Texas.

We currently only sell our products online to cut out the middleman and to maintain a quality product at a competitive price.

Yes, we apply sales tax based on items purchased and state laws.

Our products can be bought and used individually. However, our customers see best results when they use the complete system as was designed.

Orders and Shipping:

Standard time to receive items is 4-7 days. However, quicker shipping options are available for a premium.

Please email support on our Contact Us page as quickly as possible. If the item has not shipped, we can update the order information.

Once the order has shipped, we will send you a confirmation email with tracking details.
We currently only ship within the USA.
Yes, we will ship all items in the same packaging.

Returns and Exchanges:

We offer a complete 90-day refund on all products we sell. Simply send us a note on the contact page, and we will take care of it.

Oh no! Please reach out via the Contact Us page, and we will exchange the item.

Oh no! Please reach out via the Contact Us page, and we will replace the item.

It is the customer’s responsibility to double check and enter the correct contact information.

Please email customer service on the Contact Us page as soon as the mistake is noticed. We will do our best to change the shipping address if it has not already shipped.

Free domestic shipping

On all orders above $30

Easy 90-day returns

Complete money-back guarantee

100% secure checkout

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MasterCard / Visa