In New York, you may encounter a type of person: although their skin is smooth and their contours are tight, there is always something wrong when they smile—eyes don't crinkle, eyebrows don't move, the whole face looks like a delicate mask. This is not aging, but the result of excessive intervention. There is an easily overlooked dimension in medical aesthetics: the balance of dynamic and static. The lines on the face, some are the 'vivid traces' needed for expressions, while others are the 'aging marks' that need improvement. Learning to distinguish between them is the key to getting younger without turning into an expressionless wax figure. This article discusses how to 'move naturally and stay still appropriately' from the perspective of dynamic and static.
I. Dynamic Lines vs. Static Lines: Differentiate First, Then Treat
Many people cannot differentiate between dynamic lines and static lines, and generically refer to them as 'wrinkles,' but their causes and treatment methods are completely different.
Dynamic LinesThese are lines that appear when making expressions, such as crow's feet (smiling), frown lines (frowning), forehead lines (raising eyebrows). They originate from muscle movements squeezing the skin. When young, with good skin elasticity, the lines disappear after the expression ends; as age increases, where dynamic lines repeatedly appear, static lines gradually form.
Static LinesThese are lines that exist even when not making expressions, such as nasolabial folds, marionette lines, static forehead lines. They result from collagen loss, skin sagging, tissue drooping, and the accumulation of long-term dynamic lines.
Treatment principle: Relax muscles for dynamic lines (botulinum toxin), replenish volume or tighten skin for static lines (fillers, lasers, radiofrequency). Many people immediately want to fill static lines, ignoring that dynamic lines above are the 'culprit.' It is more efficient to first calm the muscles and then assess how much filling is truly needed.
II. The 'Degree' of Botulinum Toxin: Not Flatter is Better
The role of botulinum toxin is to temporarily block nerve signals to muscles, allowing overactive muscles to relax. However, the issue is that many people pursue 'complete flatness'—no frown lines, no crow's feet. The result is: unable to frown, eyes don't crinkle when smiling.
Good botulinum toxin treatment should 'diminish' rather than 'erase.' Frown lines can retain 30% depth, allowing natural lines when frowning, but not as deep as a '川' character. Crow's feet can retain slight fan-shaped folds, eyes still have curvature when smiling, just without radial deep grooves. Dynamic expressions are an important part of human communication. Completely detaching expressions, even in a open city like New York, can make people feel 'off.'
III. 'Zone' Thinking: Move What Needs to Move, Keep Still What Needs to Stay Still
Facial expression muscles are not a single entity, but dozens of independent or synergistic muscles. A good doctor will use 'zone' thinking to design injection plans:
Upper Face (forehead to glabella): Moderately relax the forehead muscles to avoid lowering eyebrows; retain the upward force of the eyebrow tail to avoid 'eight-character eyebrows.' Frown lines can be diminished but not completely lose the ability to frown—frowning is a natural action of focus and thought.
Middle Face (periocular area): Crow's feet can be softened, but maintain the natural curvature when smiling. The outer part of the orbicularis oculi muscle can relax, while the inner part should be preserved, otherwise when smiling, eyes won't crinkle and will appear fake.
Lower Face (perioral area, jawline): Relax the depressor anguli oris muscle to let the corners of the mouth naturally rise, avoiding a bitter look; but do not excessively relax the orbicularis oris muscle, as it may affect fine movements like whistling or using a straw.
This detailed zoning requires a high level of anatomical knowledge and injection experience from the doctor. In New York, finding a doctor skilled in 'dynamic preservation' is more difficult and more important than finding a doctor who just 'flattens.'
Conclusion
The balance of dynamic and static is one of the most subtle aspects of medical aesthetics. It tests not the technical parameters of the doctor, but their aesthetic concept and understanding of people. For you, the next time you have a consultation, you can ask the doctor a question: 'After the procedure, can I still smile naturally?' If the answer is yes, then you may have found someone who understands balance.
