https://ogacademy.pl/en/blog/Practical articles on beauty-technology training, safety and devices.enTue, 09 Sep 2026 12:00:00 +0200https://ogacademy.pl/en/blog/how-to-choose-a-beauty-technology-training-course/https://ogacademy.pl/en/blog/how-to-choose-a-beauty-technology-training-course/Written programme, hours of hands-on practice, models, equipment, trainer, materials, a verifiable certificate and post-course support — what to check before you enrol.Tue, 09 Sep 2026 12:00:00 +0200https://ogacademy.pl/en/blog/fitzpatrick-skin-phototypes-in-practice/https://ogacademy.pl/en/blog/fitzpatrick-skin-phototypes-in-practice/The Fitzpatrick scale from I to VI, its limits, and how phototype affects parameter choice in laser hair removal, IPL and other light-based treatments.Tue, 09 Sep 2026 12:00:00 +0200https://ogacademy.pl/en/blog/contraindications-to-energy-based-treatments/https://ogacademy.pl/en/blog/contraindications-to-energy-based-treatments/How to build the intake interview, tell absolute from relative contraindications, and document the decision to treat or postpone an energy-based procedure.Tue, 09 Sep 2026 12:00:00 +0200https://ogacademy.pl/en/blog/how-much-does-beauty-technology-training-cost/https://ogacademy.pl/en/blog/how-much-does-beauty-technology-training-cost/What goes into the price of an equipment training course, how individual, small-group and online formats differ, and how to compare offers so you don't overpay for theory.Tue, 09 Sep 2026 12:00:00 +0200https://ogacademy.pl/en/blog/selective-photothermolysis-explained/https://ogacademy.pl/en/blog/selective-photothermolysis-explained/Chromophore, wavelength, pulse duration and cooling — the basic principle behind lasers and IPL in cosmetology, explained without equations.Tue, 09 Sep 2026 12:00:00 +0200