Johnson Compounding & Wellness will hold its popular Customer Appreciation Open House from 10 a.m. to 2 p.m., May 7. Representatives from many of their most highly regarded brands will be on hand with free samples and wellness tips. All items (prescriptions excluded) will be discounted 20 percent for this one day only.

The event will also include a live band, face painting, more than 15 vendor tables and many raffle prizes.

Cost: Free. 577 Main St., Waltham. For more information, call 781-893-3870 or visit NaturalCompounder.com.