C4H10 Challenge – Raised $20,313 of $250,000 Total Take the C4H10 Challenge 1. Take a Selfie of you and your friends and write: C4H10 on paper, sign, your clothing, yourself, your car or any place visible in good taste 🙂 then post to social media with #C4H10Challenge. 2. Give $10 at www.C4H10.org. 3. Post your picture and link to www.C4H10.org on Social Media and Challenge your friends to do the same! Select C4H10 Amount Contribute : $10.00 USDOther Contribution Amount No PayPal account? Pay using your credit or debit card link on the PayPal secured page.