Clinical Tools

Aesthetics calculators, built on published data.

Free clinical reference tools for chemical peels, microneedling, dermal fillers, retinol, laser hair removal, and Botox — backed by peer-reviewed research and FDA dosing guidelines.

Skincare Free calculator

Chemical Peel Calculator

Compare glycolic, salicylic, lactic, mandelic, TCA, Jessner's and phenol peels by depth, downtime, and Fitzpatrick suitability.

Open calculator → 5 FAQs
Skincare Free calculator

Microneedling Depth Calculator

Clinical needle depth protocols from 0.25mm to 2.5mm, map your concerns to the right layer, frequency, and setting (home vs clinic).

Open calculator → 5 FAQs
Injectables Free calculator

Dermal Filler Volume Calculator

Plan HA filler volume across 8 facial areas with published clinical dosing data, vascular risk flags, and enhancement goal adjustment.

Open calculator → 5 FAQs
Skincare Free calculator

Retinol Concentration Calculator

Age-decade retinol protocols from 0.01% to 1% — start concentration, target concentration, ramp-up frequency, and results timeline.

Open calculator → 5 FAQs
Energy Devices Free calculator

Laser Hair Removal Session Calculator

Predict session count and recommended laser type (Alexandrite, Diode, Nd:YAG) from Fitzpatrick type, hair colour, area, and PCOS status.

Open calculator → 5 FAQs
Injectables Free calculator

Botox Unit Calculator

FDA-approved and off-label Botox dosing across 9 facial areas with muscle mass adjustment and the Allergan 'Look of 3' benchmark.

Open calculator → 5 FAQs

Clinical reference tools for practitioners and patients

Zdrovia's aesthetics calculators translate peer-reviewed clinical literature into interactive tools that help practitioners and patients make informed decisions. Each calculator is sourced from specific published studies, FDA-approved labelling, and established dermatology guidelines — with full source citations on every page.

These tools are for educational and reference purposes only. They are not a substitute for a qualified practitioner's assessment. Always consult a licensed healthcare provider before undergoing any aesthetic treatment.