Sara Ali Khan is a Bollywood actress who has undergone a significant weight loss transformation. She has shared some details about her weight loss journey, including her diet and exercise routine. However, there is no information available about any specific weight loss exercise product that she has used. Here are some details about her weight loss journey from the search results:

• Sara Ali Khan weighed 96 kg as a teenager and struggled with a condition called polycystic ovary syndrome (PCOS), which made it difficult for her to lose weight.
• She started her weight loss journey in her senior year of college and found her passion for fitness in her third year of college.
• She has worked with fitness coaches Namrata Purohit and Cindy Jourdain.
• She has followed a diet plan that includes turmeric and spinach boiled in hot water, idlis or boiled eggs with toast for breakfast, chapatis, dal, vegetables, salad, and fruits for lunch, upma for snacks, a light dinner with chapattis and green veggies, muesli or oats with fruits for pre-workout meal, and Greek yogurt with a scoop of protein and a little bit of coffee for post-workout meal.
• She has switched between multiple workouts like functional training, cardio, Pilates, or boxing.
• She believes in changing her workout regime to stimulate consistent results.

There is no information available about any specific weight loss exercise product that Sara Ali Khan has used.