Would filler to my cheeks lift my saggy skin even if it's due to loose facial muscles?

You have a few options and since you are young you probably do not need much. I like to use Voluma for the cheeks to bring back lost volume to the area. Starting with 1 syringe for each side and adding overtime if necessary until you achieve the look you are going after. Ultherapy is also a nice treatment for skin tightening. Using both HA fillers and Ultherapy in conjunction with one another can give a nice result.

"I suggest reaching out to an expert for a formal consultation. I like to recommend my patients start a combination of facial rejuvenation treatments.

1) Skincare with products and microneedling/PRP
2) PDT Light Therapy a few times per month with growth factors
3) Laser treatments like Clear + Brilliant regularly and others (Fraxel, Moxi, Viva, CO2, Erbium, Halo) a few times per year
4) Sculptra injections a few times per year for collagen production with fillers like Juvederm, Restylane, Belotero, Radiesse, and/or Bellafill
5) Thermage/Ultherapy for yearly skin tightening with or without PDO or cone-based Instalift threads for lifting
6) Botox every 2 to 3 months to stop movement lines and prevent lines at rest

Best, Dr. Emer."

The good news is that you're a little young for much laxity of the underlying SMAS structure.  A great combination for your would be the Vampire Facelift which strategically places HA filler as well as your own platelet rich plasma into your skin and deeper tissues to both 'lift' your skin and stimulate your stem cells to replicate and improve the integrity, quality of your skin.  The PRP will also stimulate the development of new collagen, elastin and vessels to enhance your glow, texture, smoothness, tightness and dewynes!Give it a try!  I love it!In good health,Ellen Mahony, MD

Hello.  I highly doubt that you have web facial muscles in your 30's.  It is most likely weaker skin collagen and elastin as well as a little volume loss that contribute to your face sagging.
The best option is to tighten the skin with an amazing procedure called Ultherapy and then lift the skin with a little filler volume.  Please see an unperson expert consultation to determine the best possible treatment plan for your concern. Hope this helps, Best, Dr.Avaliani

Hello,
I am not clear as why you think the muscles are loose. Sometimes we see more volume around jow line and most is excess fat tissues.
There are may options available. A photo could be very helpful and would allow me to be more specific. Anyway, there are 3 main categories:
a) Filler in cheek area, would lift up the saggy skin in some degrees.
b) fillers in midface and lower face can improve the contouring and improve the look even though may not directly affect the saggy area.
c) collagen Induction therapy, there are different treatments available, (PRP, Microneedling, laser, RF, and home treatment)

Dear Julian,
Thank you for your question. 
Midface can appear saggy from volume loss, and this can be due to bony recession and soft tissue depletion, and that accounts for your saggy skin. 
Treatment would be to volumise your midface. Your options include hyaluronic acid filler, collagen stimulators and fat grafting.
Hyaluronic acid fillers have the strongest evidence for safety and efficacy, with several level 1 evidence studies conducted. Of which, Voluma is FDA approved for the midface, with longevity of 18 months on average.
Collagen stimulators, for example radiesse, sculptra take time to achieve peak results and possess mainly level 2 evidence to support its use.
Fat grating is a surgical measure, but is operator dependent.
For a straightforward treatment, I would suggest going with hyaluronic acid fillers. 2 weeks after volumisation, if you still notice saggy skin, then you may opt for midface thread lift to give your face the extra bit of lift.
I hope this helps. 

I suspect the skin laxity you are seeing is probably related collagen, elastin and possibly fat loss in the face. All three help provide structure and support to the skin. I would probably consider a collagen stimulating filler like Scultra to adding volume to the midface and to lift the face. 

Thank you for your question. Dermal fillers at the cheeks area are often placed deep just on top of the bone lifting tissue above, which may include muscles. Micro-needling with PRP, radio-frequency and/or Clear Lift treatments will help with skin tightening by stimulating collagen production. I recommend visiting an expert in your area for a proper consultation and treatment plan. All the best, Dr. Michon

I would recommend a combination of Thermage to increase the collagen in your face and Voluma or Restylane Lyft to provide needed volume.  It would be best to have photos and consult in person since different areas of skin laxity can be treated differently.  Please consult an expert in cosmetic fillers for the best cosmetic results.  Best, Dr. Green