How to Objectively Verify Treatment Results?

The reason lighting and angle need to be the same is that these two factors can significantly alter the shadows and contour appearance of the skin, potentially distorting the actual changes.

If the direction of light changes, wrinkles and sagging on the same skin may appear deeper or shallower. The same applies to the angle. If you tilt your head slightly or the camera height changes, the jawline may appear more improved or worsened than it actually is. Therefore, to accurately see "what has changed," it is important to keep the lighting and angle consistent.

Yes, 3D diagnostic imagers or standardized skin photography devices capture the skin under standardized lighting and positioning, quantifying items such as wrinkles, pigmentation, pores, and skin texture. They also show changes in numerical values that are difficult to assess with the naked eye, aiding in objective evaluation.

However, diagnostic imager readings are only reliable when the photography conditions are consistent, so using a combination of photos, diagnostic imaging, and patient interviews can aid in evaluation.

Subjective satisfaction and objective change can be distinguished by separating "feelings" from "measurements" and evaluating each individually, as the two do not always align.

Subjective satisfaction refers to personal perception, such as how you feel when looking in the mirror, how well makeup applies, or the comfort of your facial expressions. In contrast, objective change refers to measurement results under controlled conditions, such as standardized photos and diagnostic imager readings.

Reviewing both indicators together can make interpretation more effective. For example, if the numerical change is small but satisfaction is high, that is meaningful in itself. Conversely, if satisfaction is low, you can discuss with your doctor during a consultation to identify where expectations differed.

The final evaluation of collagen-stimulating treatments is generally considered appropriate at 3 to 6 months after the procedure, as this is when the maturation and remodeling of new collagen are sufficiently advanced.

Immediately after treatment or at the 1-month mark, results are hard to judge as final because these are stages of temporary contraction and early regeneration. To track changes over time, it helps to record intermediate points such as 1 month, 3 months, and 6 months, and then make an overall assessment at the 3–6 month mark.

The exact timing for evaluation and the next management plan may vary depending on the type of treatment and individual skin response, so we recommend determining this through a consultation with a dermatologist.