PI-WIKI-ANA-20 · Applied Anatomy · reviewed 2026-10-31
Applied Anatomy, Tissue Remodeling in Ear Stretching
Critical numbers
Epidermis Thickness0.05-0.15 mm at most body sites
Total Skin Thickness (most body sites)1.5-2.5 mm; not measured for the earlobe
Collagen Composition (Dermis)Type I (most), Type III (a smaller share)
Dermal MechanicsViscoelastic, creeps under sustained load ; no earlobe tearing threshold published [5]
Stretch Increment (per session)One gauge size at most, half sizes where possible; studio rule about 1.0 mm (0.5 mm above 00g)
Minimum Interval, 14g to 8g4-8 weeks
Minimum Interval, 6g to 2g8-12 weeks
Minimum Interval, 1g to 00g10-16 weeks
Minimum Interval, Above 00g12-16 weeks (10 mm to 20 mm); 16-24 weeks from 22 mm
Wound Remodeling PhaseWeeks to a year or more [2]
Surgical Repair TechniqueUnder about 15 mm: direct closure; larger, drooping lobes: excision and rotation [4]
Point of No Return (Lobe Recovery)Not established by any study [5]
Do not
- Skipping Sizes
- Forcing a Taper or Wearing Tapered Jewelry
- Insufficient Interval
- Ignoring Pain Signals
- Low-Quality Jewelry Materials
- Stretching Through Infection
Applicable standards
- European Union & UK — EU Medical Device Regulation (MDR) 2017/745
- United States — FDA: body jewelry has no medical purpose and is not regulated as a medical…
- ASEAN & Asia-Pacific — Thailand