As of my last update in January 2022, the best-selling microcurrent facial devices in the consumer market were:

1. NuFACE Trinity Facial Toning Device: Known for its effectiveness in toning and lifting the skin.
2. Foreo Bear: A compact device with microcurrent and T-Sonic pulsations for facial toning.
3. MZ Skin Tone & Lift Germanium Contouring Facial Roller: Combines microcurrent technology with a facial roller for sculpting and toning.
4. ZIIP Beauty Nano Current Skincare Device: Offers various electrical currents for multiple skincare benefits.
5. Lure CHARM: Lithium Ion Facial Massager: Uses microcurrent technology for facial stimulation and rejuvenation.
6. MyoLift Mini Microcurrent Device: Focuses on lifting and toning facial muscles.
7. Carer Facial Massager: A portable microcurrent device for facial lifting and firming.
8. Carol Cole Co. NuGENE Microcurrent Facial Toning Device: Designed for toning facial muscles and enhancing skin elasticity.
9. Beauty Star Facial Toning Device: Utilizes microcurrent for facial muscle stimulation and tightening.
10. Project E Beauty Microcurrent Facial Toning Machine: A device aimed at improving facial contours and reducing wrinkles.

Keep in mind that the market can change rapidly, and new products might have emerged since then. It's advisable to check for updated reviews and best-selling lists to get the most current information on these devices