Dental hygienists in Dubai are typically required to have formal education, training, and licensure. Here are the general steps and timeframes to become a dental hygienist in Dubai:

1. Obtain a High School Diploma: A high school diploma or equivalent is required to pursue education in dental hygiene.

2. Obtain a Dental Hygiene Associate's Degree: Pursue an associate's degree in dental hygiene from an accredited institution. This typically takes 2-3 years.

3. Gain Clinical Experience: After obtaining a dental hygiene degree, you will need to gain clinical experience through internships or supervised clinical practice.

4. Obtain Licensure: To practice as a dental hygienist in Dubai, you must be licensed by the Dubai Health Authority (DHA). To obtain a license, you will need to pass an exam and meet the licensing requirements set by the DHA. These requirements may include a minimum level of education, supervised clinical experience, and passing the licensing exam.

The total time it takes to become a dental hygienist in Dubai can vary depending on the individual's circumstances, but it typically takes at least 2-3 years to obtain an associate's degree in dental hygiene and gain clinical experience. Additional time may be required to obtain licensure.