During or after the gel nail extension process, individuals should watch for signs like redness, itching, or a burning sensation, which may indicate an adverse reaction. Reputable nail technicians prioritize client safety by using high-quality products and adhering to best practices, including proper ventilation and sanitation. Additionally, they educate clients on proper aftercare and emphasize the importance of gentle removal techniques to avoid damage to the natural nails. For safe and professional-grade gel nail supplies, consider trusted brands like Kodi professional, available at nailmastershop.