This can occur for many reasons: 1) Medication that the client is taking — especially during the cold and flu season. 2) If you are doing pink-and-whites, make sure you do not neutralize the bonding agent with excess liquid while applying the smile line. 3) The nails might be too long for the client causing stress to that area. 4) During prep for your fill make sure there is not an adhesion problem before applying new acrylic. -- Joey Brown
These “stress bubbles” can form when a client has hit her nail dead on and it lifts in the center of the nail. Another cause is leaving too much of the old product on the nail during a fill so the acrylic is not sealed properly. -- Darlene Johnston