What Causes Facial Aging, A Layer-by-Layer Guide
Medically reviewed by
4 independent reviewers
Andrew Conrad Barile, PT, DPT
Doctor of Physical Therapy (DPT) | Licensed Physical Therapist (PT) | CEO and Founder, Xtreem Pulse LLC
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Dr. Andrew Conrad Barile is a Doctor of Physical Therapy and the CEO and Founder of Xtreem Pulse LLC, the engineering company behind PureLift. He earned his Doctorate in Physical Therapy from Daemen College and is a licensed physical therapist.
He brings over two decades of clinical and entrepreneurial experience across physical therapy, craniosacral therapy and medical device innovation, built on a working knowledge of human anatomy and muscle physiology.
For PureLift LAB he reviews how current is delivered across all ten levels, from sub-sensory nanocurrent and skin-level microcurrent to motor-level EMS, and how the Infuse pass fits into the same ten-minute routine.
Bertica M. Rubio, M.D.
Board-Certified Physician, Dartmouth Medical School | Medical Director, Antiaging Regenerative Medicine Clinic
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Dr. Bertica M. Rubio is a board-certified physician and Medical Director of the Antiaging Regenerative Medicine Clinic in Redlands, California. She earned her Doctor of Medicine from Dartmouth Medical School and completed her pediatrics residency at UC Irvine Medical Center.
With decades of clinical experience, she specialises in age management medicine, regenerative medicine, wound healing and growth factor therapies, and her practice integrates evidence-based medical science with advanced aesthetic treatment.
For PureLift LAB she reviews articles for medical accuracy across the whole dial, from the gentle nanocurrent and microcurrent settings through to muscle-level EMS and the Infuse pass.
Daniel Grinberg, MD, FACS
Board-Certified Otolaryngologist | Head and Neck Surgeon | Fellow, American College of Surgeons | Mount Sinai
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Daniel Grinberg, MD, FACS is a board-certified otolaryngologist and head and neck surgeon at ENT and Allergy Associates in West Nyack, New York. He earned his medical degree from Columbia University College of Physicians and Surgeons.
He completed his otolaryngology residency at New York University Medical Center, serves as Assistant Clinical Professor at Mount Sinai School of Medicine, and is a Fellow of both the American College of Surgeons and the American Academy of Otolaryngology.
For PureLift LAB he brings a wider clinical lens, connecting at-home facial stimulation from microcurrent to EMS to the anatomy underneath, with the same rigour we apply to every device specification.
Prof. Dr. med. Ivo Buschmann
Chair of Angiology, Medizinische Hochschule Brandenburg | Clinic Director, University Clinic for Angiology
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Prof. Dr. med. Ivo Buschmann is Chair of Angiology at the Medizinische Hochschule Brandenburg Theodor Fontane and Clinic Director of the University Clinic for Angiology at the Brandenburg University Hospital.
He trained at the University of Hamburg, was a Max Planck Society Fellow at the Max Planck Institute for Heart and Lung Research, and held senior consultant posts at the Charite Universitatsmedizin Berlin before his appointment as Chair in 2016.
One of Europe's leading authorities on arteriogenesis, with over 150 peer-reviewed publications and US and EU patents, he reviews for PureLift LAB how the evidence on electrical stimulation is read and where its limits lie.
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A face does not age in one place, it ages in five layers at once, and each one changes on its own schedule.
This article walks through the routine step by step, such as:
- Bone, the frame everything sits on
- Fat, arranged in compartments
- Retaining ligaments, the anchors
- Muscle, the layer most people ignore
- Skin, the layer you can see
and many more!
Knowing which layer your concern lives in is what stops you buying the wrong solution for it.
Key Points:
Facial bone remodels with age, and nothing non-surgical changes it.
Fat compartments lose volume and shift downward at different rates, which is what creates jowls.
Retaining ligaments loosen, so the same tissue sits lower on the same frame.
Muscle is the only structural layer a home device has a documented route to.
Skincare works on the top layer, which is the right place for it and not where sagging is formed.
Bone, the frame everything sits on
Facial bone is not static across a lifetime, and it remodels measurably, with the orbital openings widening and the jaw angle changing across decades.
Less bony support means the soft tissue above it has less to sit on, which contributes to hollowing around the eyes and softening along the jaw.
This is the layer nothing at home touches, and it is worth naming first so the rest of the page reads honestly.
Fat, arranged in compartments
Facial fat is not one even layer, it sits in distinct compartments separated by connective tissue, which is the single most useful anatomical fact in this article.
Those compartments lose volume at different rates and shift downward at different rates, which is why a face can look hollow at the temple and heavy at the jaw simultaneously.
Tissue that used to sit on the cheek gathering along the jawline is most of what a jowl is, and it is a redistribution rather than simply a sag.
Rapid weight loss accelerates the emptying part of that, which is why it shows in the face before anywhere else.
Retaining ligaments, the anchors
Retaining ligaments run from bone through the soft tissue to the skin, holding everything in position.
As they loosen, the same volume of tissue sits lower on the same frame, and because they anchor at specific points, the descent is uneven and creates the folds people recognise.
A surgical facelift works substantially on this layer and the sheet it connects to, which is why the results are structural and last years.
Muscle, the layer most people ignore
Around forty small muscles sit in a connected sheet called the SMAS, and unlike most muscles in the body they attach bone to skin rather than bone to bone, which is why their condition shows on the surface.
Muscle tone changes with age alongside everything else on this page, and it is the one structural layer an electrical device has a documented route to.
Kavanagh 2012 followed 108 women using daily facial muscle stimulation for twelve weeks and ultrasound measured an 18.6 percent increase in cheek-muscle thickness (Kavanagh 2012).
Chang 2020 tested the same idea against an identical-looking dummy device over six weeks and found muscle thickness and strength increased (Chang 2020).
Both used their own devices, so they show what facial muscle stimulation can do rather than what any particular device did for a particular face.
Skin, the layer you can see
Collagen and elastin decline steadily from the mid-twenties, which reduces both firmness and how well skin recoils after being stretched.
Cell turnover slows and the barrier becomes less efficient, which is what shows up as rough texture and dullness.
Cumulative sun exposure accelerates all of it, and daily protection is the single highest-value habit available at any price point.
Skincare and microcurrent both work here, which is the right place for them, and it is not where sagging is formed.
Matching the concern to the layer
Texture, dullness and fine lines are skin, so topical products and skin-level current are the right tools.
Hollowing is lost fat volume, which is a clinic question rather than a home one.
A softening jawline is fat descending, ligaments loosening, skin drooping and muscle tone changing together, so a device addresses one contributor out of four and no home routine addresses the rest.
Stating that ratio plainly is the point of this article, because it is the difference between a device that meets your expectations and one that disappoints you.
Where a device fits
Every PureLift model runs nanocurrent at level 1, microcurrent at level 2 for the skin layer, EMS from level 3 to 10 for the muscle layer, and an Infuse pass carrying Infusion and iontophoresis.
Three minutes on each side, about ten minutes in total, four times a week, judged on photographs twelve weeks apart under matched conditions.
No home device reaches bone, the fat compartments or the retaining ligaments, and any brand claiming otherwise is describing a layer its physics does not touch.