"Fairywill" is a brand known for its electric toothbrushes and teeth whitening products. The Fairywill D7 Sonic and Fairywill E11 Sonic Electric Toothbrushes are among their popular products. These toothbrushes have been reviewed positively for their long battery life, comfort, and value for money. However, some users have reported that the plastic of the brush feels cheap and there have been issues with the product lasting only 6 to 12 months. The Fairywill Teeth Whitening Strips have also received positive reviews for their ease of use and effective results. Overall, "Fairywill" appears to be a legitimate company with products that generally receive positive reviews.