The FOREO ISSA 4 Smile is a sonic toothbrush with a hybrid head: soft silicone bristles on the outside for gums, firmer polymer bristles inside for plaque. It runs at 9,000 pulsations per minute and is meant to be used with a normal manual brushing motion rather than the small circles of a typical electric brush. A smiley-face timer smiles after two minutes and frowns if you skip a brush for over 12 hours. Its standout claim is battery life of up to 265 days per USB charge, far longer than most sonic brushes, and the silicone head is built to last longer than standard brush heads. It suits people with sensitive gums who dislike the buzz of high-speed brushes; those wanting the deepest clean from a fast oscillating brush may find it gentler than they expect.
In stock
Lowest price we've seen: $46.67 on Nov 13 at sweetcare.com. Tracked across 1 store since Nov 13.
Ratings are middling at 3.7 out of 5 from 27 buyers. Those who like it praise the gentle feel on gums and the long battery life; others find the cleaning action weaker than a conventional electric brush and the silicone bristles odd at first.
The FOREO ISSA 4 Smile is a rechargeable sonic toothbrush with a hybrid brush head. The outer silicone bristles are gentle on gums, and the inner polymer bristles work on plaque. The 360° head cleans teeth, gums, cheeks and tongue, and a tongue and cheek cleaner is included.
It delivers 9,000 pulsations per minute for cleaning and gum massage. It is designed for a natural manual brushing gesture, so you can keep your preferred brushing style. A smiley face timer smiles after a 2-minute brush and frowns if you skip brushing for over 12 hours.
The brush is made with ultra-hygienic PBT polymer and medical-grade silicone bristles. It has an anti-slip grip and is 100% waterproof. A single USB charge gives up to 265 days of battery life.
