EXCLUSIVE HOT & COLD AIR CYCLE MODE - Hold the temperature button for 2 seconds to switch to the hot & cold air alternating cycle mode, which dries hair quickly while minimizing heat damage. This not only protects the scalp and strengthens your hair but also effectively protects against the fading of dyed colors DESIGNED FOR FAST DRYING OF WOMEN'S HAIR - 110,000RPM high speed brushless motor delivers powerful airflow up to 21m/s for up to 3× faster drying! Whether you have short hair or thick long hair it only takes 2-7 minutes to dry. Low noise, you can enjoy a quiet styling experience PROFESSIONAL SALON-GRADE HAIR CARE BLOW DRYER - 200 MILLION NEGATIVE IONS & DEEP NUTRITIONING - Our negative ion hair dryer has 2000× more negative ions than ordinary hair dryers. Negative ions will lock the moisture in your hair, making it soft and smooth with less breakage and healthier. Better results for long hair! SMART THERMO-CONTROL MONITORS - The iDOO high-speed hair dryer with Smart Ther