As a lash or nail tech, you transform how your clients feel about themselves.

One moment, you’re perfecting a Russian volume set for a bride-to-be, the next, you’re sculpting a flawless gel overlay for a client who’s doing her nails for the first time. And between appointments, you’re managing bookings, checking stock levels, and wondering if it’s time to raise your prices.

In an industry where trends move fast and client expectations are higher than ever, you must stay on top of industry language. Being fluent in the terms of your craft is about sounding professional, but it’s also about:

• Explaining services clearly to first-timers so they know exactly what they’re paying for.
• Training staff and assistants to deliver a consistent, high-quality experience.
• Avoiding costly mistakes that come from miscommunication.
• Positioning yourself as an expert whom clients trust and come back to.

That’s why we created this ultimate glossary for lash and nail techs. 

60+ terms every lash and nail tech should know

We’ve broken things down into five categories to make it easier for you to scan. 

• Lash extensions and services
• Nail services and techniques 
• Lash and nail products and tools 
• Lash and nail business and operations
• Lash and nail roles

A. Lash extensions and services

1. Base: The point where the lash extension must be securely attached, near the natural lash line.
2. Bond: The adhesive connection between the lash extension and the natural lash.
3. Classic: A lash extension style that applies one extension to one natural lash.
4. Curl type: The angle at which a lash extension is curved (e.g., J, C, or D curls).
5. Cure: The time it takes for the lash adhesive to fully dry and set.
6. Diameter: The thickness of a single lash extension, measured in millimetres.
7. Dimension (D): In volume lashing, the number of extensions in a fan (e.g., 3D, 5D, 7D).
8. Fill: A maintenance service done every 2–3 weeks to replace shed extensions and maintain a full look.
9. Hybrid: A lash style that mixes classic and volume lashes for a textured look.
10. Isolation: The technique of separating a single natural lash before attaching an extension to prevent sticking.
11. Lash mapping: A visual plan or chart that guides where different lengths, curls, and thicknesses of lashes should be placed for a specific style.
12. Lash shedding cycle: The natural growth and fall-out cycle of eyelashes, typically every 6–8 weeks.
13. Patch test: A small pre-application test where a few lashes are applied to check for allergic reactions to the adhesive.
14. Retention: How well lash extensions stay adhered over time. Influenced by technique, adhesive, and aftercare.
15. Volume: A lash style that uses multiple lightweight extensions (fans) on one natural lash for a fuller, fluffier look.

B. Nail services and techniques 

16. Acrylic: A strong nail enhancement created by combining a liquid monomer and powder polymer to sculpt or overlay nails.
17. Almond: A nail shape with tapered sides and a soft, rounded point, resembling an almond.
18. Ballerina: A long, slender nail shape with a flat, squared-off tip, resembling a ballerina’s pointe shoe.
19. Builder gel: A thick gel used to build length, add strength, or create overlays on natural nails.
20. Cuticle: The thin layer of skin at the base of the nail that protects new nail growth.
21. Cuticle care: The process of gently pushing back and tidying the cuticles for a clean, healthy nail bed.
22. Dip powder: A nail enhancement technique where nails are dipped into a colored powder and sealed with an activator for long-lasting colour.
23. E-file: An electric nail file used to shape, smooth, and remove product efficiently.
24. Gel (gel polish): A long-lasting polish cured under UV/LED light, providing a glossy, chip-resistant finish.
25. Manicure: A nail service that includes cleaning, shaping, cuticle care, and polishing the fingernails.
26. Nail form: A sticker or template placed under the free edge of the natural nail to sculpt gel or acrylic extensions.
27. Nail prep: The process of cleaning, buffing, dehydrating, and priming the nail before product application for better adhesion.
28. Overlay: A strengthening layer of gel or acrylic applied directly over the natural nail without adding length.
29. Pedicure: A nail service focused on cleaning, shaping, exfoliating, and polishing toenails, often including foot care.
30. Squoval: A popular nail shape combining the straight edge of a square with the softer edges of an oval.
31. Stiletto: A dramatic, elongated nail shape ending in a sharp, pointed tip.

C. Lash and nail products, tools, & accessories

32. Adhesive: Cyanoacrylate-based glue used to attach synthetic lash extensions to natural lashes.
33. Buffers: Multi-grit tools used to smooth the nail surface and create a polished finish before product application.
34. Callus remover: A product used to soften and eliminate thickened skin on the feet or around the nails.
35. Clippers: Tools for cutting natural nails, available in various sizes for fingernails, toenails, and cuticle trimming.
36. Cuticle oil: A nourishing oil that hydrates and softens the cuticles and surrounding skin.
37. Cuticle pusher: A tool used to gently push back and remove non-living tissue from the nail plate.
38. Cyanoacrylate: The chemical compound found in lash adhesives that provides a strong bond between the extension and the natural lash.
39. Dehydrator: A solution applied to nails to remove natural oils and moisture, improving adhesion of acrylic or gel products.
40. Disinfectant: Solutions used to thoroughly clean tools and surfaces, killing or neutralising microorganisms to maintain hygiene standards.
41. Eyelash extensions: Synthetic, silk, or mink fibres applied to natural lashes to enhance length, curl, and volume.
42. Lamps (LED/UV): Curing devices used to harden gel polish and builder gels. LED lamps cure faster than traditional UV lamps.
43. Lash pad: A protective pad placed under the lower lash line to isolate bottom lashes during application.
44. Lash remover: A specially formulated product designed to safely dissolve lash adhesive for extension removal without damaging natural lashes.
45. Nail art brushes: Precision brushes used to create detailed designs, patterns, and artwork on nails.
46. Nail drill bits: Attachments for electric nail files (e-files), available in different shapes and grits for shaping, product removal, and cuticle work.
47. Nail files: Tools with varying grit levels used to shape natural or enhanced nails.
48. Primer: A product used either on lashes for adhesive prep or nails to improve gel/acrylic adhesion.
49. Sanitiser: Products used to clean hands, tools, and surfaces, reducing but not fully eliminating germs.
50. Tweezers: Precision tools used to pick up and apply lash extensions, available in straight, curved, and angled varieties.

D. Lash and nail business & operations

51. Aftercare advice: Clear instructions given to clients after a service to help maintain results, prevent damage, and ensure long-lasting retention.
52. Booking system: A digital platform or app used to schedule and manage client appointments. Splice can automate bookings, reminders, and payments to save time.

53. Consultation: The first step in client service is where you discuss their goals, preferences, medical history, and any allergies before beginning a treatment.
54. Contraindications: Conditions that make a treatment unsafe or inadvisable (e.g., eye infections, allergies to adhesives, certain skin conditions).
55. No-show fee: A charge applied when a client misses an appointment without giving proper notice, protecting your revenue and schedule.
56. Overhead: The ongoing costs of running your business, including rent, products, utilities, and software.
57. Upselling: Recommending add-ons or upgrades to increase service value and client satisfaction.
58. Waiver (informed consent): A document signed by clients acknowledging they understand the procedure, risks, and aftercare requirements before starting a service.

E. Lash and nail roles

59. Cosmetologist: A beauty professional trained in a wide range of treatments, including hair, nails, lashes, and skin care.
60. Esthetician: A skincare specialist licensed to perform facials, waxing, and basic lash/brow services.
61. Lash artist or technician: A professional trained to apply lash extensions safely and precisely.
62. Nail technician: A professional trained to perform manicures, pedicures, and apply enhancements like gel or acrylic.

Conclusion

The words you and your team use every day shape how confident your clients feel, how smoothly your appointments run, and how credible your brand appears. This glossary is your cheat sheet for getting everyone on the same page. 

Share it with your team, refer to it during training, and keep it handy as you onboard new staff. The more fluent you are in the language of lash and nail care, the more trust you’ll build with clients and the more confidently you’ll run your business.