COZURU Natural Almond Dual Forms - C21

Q: How do I find the right dual form size for my nails?
A: Choose a form that spans comfortably from sidewall to sidewall without pinching your nail bed. If you are between sizes, always size up: the extra space accommodates your gel without flattening your natural arch. With 14 distinct sizes (0–13), C21 fits virtually every natural nail bed.

Q: Are these dual forms reusable, and how do I clean them?
A: Yes, they are 100% reusable. After curing and popping off the form, wipe away any remaining residue or gel dust inside and out with a lint-free wipe soaked in 70%+ isopropyl alcohol. Let them air-dry and return them to the storage box for your next set.

Q: What types of nail extension gels can I use with C21 Dual Forms?
A: They are fully compatible with polygel, acrygel, builder gel in a bottle or pot (such as COZURU Clear Builder Gel), and acrylic systems. The crystal-clear material ensures complete UV/LED light penetration for a thorough cure.

Q: How do I prevent gel from squeezing out around my cuticles and underside?
A: Apply the gel thinner near the cuticle edge and concentrate the bulk in the center apex. Place the form at a 45-degree angle near the cuticle and slowly press forward toward the tip so air escapes cleanly. Before curing, flip the finger over and smooth out any underside overflow with a brush dampened in slip solution or alcohol.

Q: Why are my extensions lifting or popping off, and how do I make them last?
A: Long-lasting retention (3 to 4+ weeks) depends on proper prep: thoroughly remove cuticle on the nail plate, gently buff away surface shine with a 180-grit buffer, dehydrate, and apply a cured gel base coat. Ensure no gel touches surrounding skin or cuticles before curing under the lamp.

Q: Why do my sidewalls crack or end up too thin after filing?
A: This occurs if product is pressed out along the sides during application. When spreading gel inside the mold, maintain even thickness along both lateral edges. The molded calibration lines on C21 help you monitor gel distribution to build strong sidewalls and a balanced apex arch.

Q: How do I remove the dual form after curing without damaging the extension?
A: Once fully cured, do not pry from the cuticle end. C21 features a built-in circular handle tab at the tip: simply pinch and gently wiggle the tab from side to side. The seal will release with an easy click, leaving behind a smooth, high-shine surface.

Q: Is C21 Natural Almond beginner-friendly? Does it require heavy filing?
A: Yes, it is beginner-friendly. C21 is pre-molded with a classic salon-tapered almond contour and smooth apex, eliminating 90% of manual sculpting and bulk filing. After popping off the mold, simply refine the free edge and smooth the cuticle transition before applying polish or top coat.