Six Nails Lifting at Day Seven
Day 7 after a full set of liquid-and-powder nails, your client - a dishwasher at a busy restaurant - returns with lifting on six nails. On each affected nail the lifting starts at the lateral sidewalls and runs about halfway down the nail bed; the free edges are still tightly bonded. She has short, naturally oily nail plates. At the original appointment you etched with a 180-grit file, used a dehydrator and a non-acid primer, and sculpted with a medium-wet ratio; her free edges were slightly flooded at the sidewalls. The salon's humidity gauge read 68% on the day of application. She takes no medications and reports no other changes.
1. Given where the lifting is located, which causes are most probable and which are least probable? Explain your reasoning from the pattern, not from a list.
Read the worked answer
The pattern is the evidence. Lifting confined to the sidewalls with intact free edges points to failure at the skin-side interface, not at the tip or under the stress area.
Most probable:
- Product contacting skin and the lateral folds. Flooding at the sidewalls means acrylic bonded to nonliving tissue and the nail fold rather than the plate; as that tissue moves and sheds, the product peels back from the edge inward.
- Trapped moisture and oils at the lateral folds on an oily plate, worsened by 68% humidity and by wet work (dishwashing) - the dehydrator and non-acid primer were probably not enough for this plate type.
Least probable:
- Tip bond or free-edge stress, which would show lifting or cracking at the free edge or apex.
- A uniformly too-wet mix, which typically shows shrinkage stress and lifting across the stress area and center, not only at the sidewalls - though a wet mix at the sidewalls amplifies the flooding problem.
Humidity slows set and increases the chance of a wet mix behaving wetter than intended.
2. The client wants you to "just fill them." Why is that the wrong service, and what does the correct service look like?
Read the worked answer
Filling over lifted product seals a pocket. A lifted edge is a capillary space that holds water and product residue; covering it traps moisture against the plate, which is the setup forPseudomonas colonization (the green discoloration clients call "mold") and for further separation.
Correct service:
- Remove all lifted product - file or e-file down to the visible margin, then soak or use the appropriate remover rather than forcing it off.
- Once bare, inspect the plate under good light. If it is stained green, soft, or separated from the bed, do not re-cover it; refer for evaluation and let it grow out.
- Disinfect/cleanse the plate, dehydrate, and re-prep the sidewalls.
- Rebuild the nail - rebalance the apex and stress area if the structure is sound.
If she cannot tolerate a full removal today, the honest answer is a partial removal and a temporary protective finish, not a fill.
3. List the specific changes to prep and application for the next set, tying each one to the mechanism that caused the failure.
Read the worked answer
- Clear the lateral folds first. Use a hand tool or fine bit to gently remove nonliving tissue and debris from the sidewall pockets before etching - oil and keratin debris there defeat any primer.
- Dehydrate twice, and let it flash off. On an oily plate in 68% humidity, one pass is not enough.
- Consider an acid-based primer for this plate type, applied sparingly to the plate only, never to skin.
- Control the bead. A medium-wet mix that stays on the brush, worked thin at the sidewalls, prevents skin contact - the original set was flooded there, which is where it lifted.
- Etch with intent, not pressure: 180-grit to remove shine, then remove dust completely.
- Cure/set fully before wet work, and advise gloves for dishwashing and cuticle oil daily; prolonged water exposure is the ongoing variable she controls.
- Book her at three weeks, not four, to catch sidewall lift before it migrates.