The cost of Botox injections in Chennai can vary depending on several factors, including the clinic, the expertise of the practitioner, and the specific treatment area. Generally, the cost is determined by the number of units of Botox required to achieve the desired results. In Chennai, the average cost of Botox injections can range from INR 300 to INR 700 per unit. 

It's important to note that multiple units may be needed for each treatment area, and the total cost can add up accordingly. It is recommended to consult with a reputable clinic or practitioner to get an accurate assessment of the treatment cost based on individual needs. Remember, choosing a qualified professional and prioritizing safety and quality are crucial when considering Botox injections, as they ensure optimal results and minimize any potential risks.