Amazon offers the Chemical Guys Mr Pink Super Suds 1-Gallon Car Wash Soap & Shampoo for $16.80. Add it to your cart via Subscribe & Save to cut it to $14.28 and grab free shipping. That's slightly under our March mention and the lowest price we could find now by $28. It's pH neutral and extra slick for a scratch-free wash.

Be sure to cancel Subscribe & Save after your order ships to avoid being billed for subsequent shipments.