Show HN: I'm a dermatologist and I vibe coded a 3D biophysical skin model

SkinLab is an interactive 3D biophysical skin model: a 40 × 40 × 9.75 mm voxel block at 0.25 mm resolution that simulates incisions, punches, ablation, fractional lasers and chemical reconstruction. Controls include cut depth, radius, pulse energy and density; fractional lasers use published 1550 nm parameters (pulse energies up to ~30 mJ, densities to 200/cm², microcolumn widths ~100-160 µm, depths ~0.3 mm to >1 mm) with microcolumns represented as partial-occupancy voxels. TCA applications (example 70%) coagulate protein into frosted columns that remodel into collagen over months. Treatments are applied as passes that compound; a healing-time scrubber and a “Form scar” run let users compress months of remodeling into seconds. UI tools generate acne fields (configurable number, severity and mix of ice‑pick, boxcar and rolling scars) and produce quantitative scar reports.

Anatomy and mechanics are explicit: epidermis 0.3 mm, dermis 2.0 mm, fat 7.4 mm; anisotropic pretension along tension lines; and published in vivo moduli (skin over fat ~30 kPa, fat ~10 kPa, mature scar ~120 kPa) with overdamped viscous behavior. Wounds heal over a year by granulation and contraction; scars can be flat, hypertrophic or atrophic and depths are constrained by tissue loss (ice‑pick ~0.6-1.3 mm deep, boxcar ~0.9-2.0 mm across, rolling from dermis-fat tethering). Laser- and TCA-induced coagulation drives collagen remodelling over 3-6 months, passes can be interleaved to increase dose, and the model supports sectioning, layer opacity, measurement outputs and validation runs against published scar behavior for objective comparison.