What details should be paid attention to during eyelash extensions?

Apr 26, 2025

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Eyelash extensions are a delicate cosmetic procedure that requires careful attention to detail to ensure safety, comfort, and optimal results. Below is a comprehensive guide covering key considerations across four critical areas: technical compatibility and risk prevention, operational details, post-procedure care, and advanced optimization techniques.​

 

Eyelash Extension

 

1. Technical Compatibility and Risk Prevention

Client Health Considerations

Absolute Contraindications:

Acute eye infections such as conjunctivitis or styes.

Recent eye surgeries, including procedures like blepharoplasty.

Known allergies to contact lenses or related materials.

Pregnancy, due to hormonal fluctuations that may increase sensitivity.​tanbyzoe.com.au

Relative Contraindications:

Natural eyelashes with a diameter less than 0.07mm, as they are prone to breakage.

Individuals with fewer than 50 natural lashes per eye, which may result in a sparse appearance post-extension.

Clients experiencing lash growth disruptions due to factors like chronic sleep deprivation; a rest period of one month is advisable.​

Allergy Testing:

Apply a small amount of adhesive behind the ear and observe for 24 hours. Discontinue if redness or itching occurs.​

Material Safety Standards

Adhesive Selection:

Use medical-grade cyanoacrylate adhesives, preferably ethyl-based for reduced irritation.

Store opened adhesives in a cool environment and use within one month.

In high humidity conditions (above 60%), incorporate anti-whitening agents to prevent blooming.​rqlashes.com+3Amber Lash+3relash.co+3

Eyelash Parameters:

Length: Inner corner ≤9mm; middle 10–11mm; outer corner 9.5–11.5mm. For round eyes, extend the outer corner by 2mm.

Curl: For monolids or puffy eyelids, use L-curl (65°–70°); for downturned eyes, apply C-curl (75°) at the outer corners.​

Tool Sterilization:

Sterilize tweezers using an autoclave at 121°C for 15 minutes or soak in 75% alcohol for 30 minutes.

Use disposable lash pads for each client.​

 

 

2. Operational Details

Adhesive Application Techniques

Quantity Control:

Use adhesive droplets no larger than 2mm in diameter.

Replace adhesive every 10 minutes to maintain efficacy.​

Application Timing:

Complete the bonding process within 4 seconds of dipping the lash into the adhesive.

If exceeded, re-dip to ensure proper adhesion.​wisplashes.com+1relash.co+1

Preventing Adhesive Seepage:

Apply a 0.1mm transparent barrier at the lash base before extension to minimize irritation.​

Eyelash Placement Guidelines

Zonal Application:

Inner Eye: Use 8–9mm lashes, spaced 1.2–1.5mm apart, aligned parallel to the nose bridge.

Middle Eye: Apply 10–11mm lashes, spaced 1–1.2mm apart, angled 15° upward.

Outer Eye: Use 9.5–11.5mm lashes, spaced 1.2–1.5mm apart, angled 30° upward.​

Root Distance:

Maintain a 0.3–0.5mm gap between the extension and the natural lash root to prevent follicle irritation or premature shedding.​

Density Control:

Do not exceed 180% of the natural lash count per eye; for sparse lashes, limit to 150% to avoid overloading.​

Style Adaptation Formulas

Eye Shape Adjustments:

Long Eyes: Gradually decrease lash length from the center to the inner and outer corners to create an almond shape.

Short Round Eyes: Extend central lashes by 2mm and curl outer lashes up to 80° to elongate the eye.

Downturned Eyes: Use outer lashes 1.5mm longer than central lashes, angled upward at 75° to lift the eye.​

Style Parameters:

Natural Look: Single lash extensions with a length variation ≤2mm and density between 120%–150%.

Dramatic Look: Volume lashes (3–5 lashes per fan) with a length variation ≤3mm and density between 160%–180%.​

 

 

3. Post-Procedure Care and Emergency Handling

First 24 Hours

Moisture and Oil Avoidance:

Avoid exposure to steam or water for the first 4 hours post-application.

Refrain from using oil-based makeup removers or eye creams for 24 hours.​Byrdie+1Byrdie+1

Sleep Position Management:

Sleep on your back to prevent lash distortion; consider using a silk pillowcase to reduce friction.​

Cleaning Method:

Use a pH-balanced (5.5–6.5) lash cleanser and gently clean lashes in a downward motion.

Avoid using cotton pads that may snag on extensions.​Byrdie

Long-Term Maintenance

Refill Schedule:

Schedule the first refill within 10–14 days; subsequent refills every 2–3 weeks, aligning with the natural lash growth cycle.​

Rest Period Strategy:

After three consecutive extension applications, take a one-month break.

During this period, use a lash serum containing panthenol (Vitamin B5) to promote natural lash health.​

Prohibited Actions:

Avoid using eyelash curlers, mascara, or waterproof eyeliners; opt for lash-friendly alternatives.

During makeup removal, use a cotton swab with oil-free remover, cleaning in a downward motion.

After swimming or sauna sessions, rinse lashes with saline solution to prevent adhesive degradation.