Red rings or semicircles on the nail plate, known as 'rings of fire', result from improper manual or E-file use, according to Helen Burton-Ward, Scratch Stars Natural Nail Specialist of the Year 2019. These painful marks indicate thinning of the nail plate near the nail bed, caused by excessive pressure or aggressive filing techniques.
Nail artist Kristie Jauvais explains that aggressive filing thins the nail plate, creating sensitive areas. To avoid this, technicians must use E-files correctly. Cylindrical bits should be kept parallel to the nail plate with light pressure. Flame or football bits require a 45-degree angle, utilising the bit's 'cheek'. Ball bits are best reserved for the skin and proximal nail fold, avoiding the nail plate entirely.
Speed selection is crucial; too slow an RPM necessitates excessive pressure, while an overly fast RPM risks nicks and 'rings of fire'. Erica's ATA advises finding a balance where the bit glides effortlessly. Gentle pressure on the nail plate and cuticles is essential throughout the process.
Reducing passes over the same nail area also prevents thinning. High-quality E-file bits, such as those made with real diamond particles, enable efficient exfoliation without requiring added force and can prevent over-filing and subsequent damage.
If rings of fire do appear, Helen Burton-Ward recommends keeping affected nails short and using cuticle oil. For deeper marks, Kristie Jauvais advises refraining from product application and allowing the nail to grow out naturally to prevent further damage.
