One side of my face (cheek part) is saggier than the other. What to do? (Photos)

You do not yet have enough sagging to justify a facelift. Concentrate on preventing sun damage by protecting your skin with sunscreen, hats and clothing. Have your dermatologist recommend a medical-grade skin care regimen with retinol and hyaluronic acid. Get regular chemical peels. If you do start to see some jowling, a mini lift, with or without a neck lift would give improvement. I hope this helps.

Hi,
I believe the asymmetries you describe are due to facial skeleton and soft tissue differences between the 2 sides. Correction via fillers or fat grafting would be the best option. Facelift is not a good option for your age.

Dr. Ali Rıza Öreroğlu MD, FEBOPRASDouble Board Certified Plastic Reconstructive and Aesthetic SurgeonIstanbul - TURKEY

I would recommend volume enhancement using a number of techniques ranging from fat to synthetic fillers. Once facial aging progresses to skin laxity and dissent, I recommend a micro or many facelift. I actually have found that patients who get treated surgically sooner end up looking better longer.
Sincerely, 
Philip J. Miller, MD, FACS
Double Board Certified Facial Plastic Surgeon

I'd recommend not getting into the mindset of thinking asymmetry will be 100% gone with a facelift as this might lead to disappointment. It is always best to consider that an area will be improved. Looking for something to be completely gone sets up unrealistic expectations and will usually lead to disappointment after surgery. There are never any guarantees of course with any procedure whether it is surgical or nonsurgical in nature.Surgery is not for everyone. In today's day and age, there are many nonsurgical options to consider although surgery usually gets the most improvement specifically of the jowls.I would recommend that you see a board-certified plastic surgeon in your area that is a member of both ASPS & ASAPS and performs a lot of facelifts but also offers all the nonsurgical options such as injectables and laser treatments. Go over your concerns with them and make sure above all, you walk out of there with several options and an idea of the pros and cons to each of them as well as realistic expectations. I hope this helps and wish you all the best in your surgery and event. If it does, please take a moment to up vote this answer on the “respond” button on the top right.  

Being only 27 years old, I would not recommend surgery. Realize that almost everyone has asymmetries.  That being said, if it concerns you, I would pursue a small amount of filler on that side.

Thank you for your question. It is not uncommon that our face is not completely symmetric.  Do you sleep on the side that is affected? Trying to sleep on your back may slow the progression. Filler or fat grafting to the areas will help to plump the area up and even things out.

I would offer sub dermal/dermal HA fillers & deep/on the bone (Cheek Y Lift) combination  to the saggy side. Under local anesthesia. Fee in the $2,500 ranges...