Cosmetics that promise procedure results: how much is true?

"Botox effect," "filler-like volume," "clinic-grade lifting": these phrases turn up often in cosmetic ads. If a cosmetic ad names a dermatology procedure, you can read it as an exaggerated ad. Procedures and cosmetics do different jobs, and Korea's advertising rules forbid attaching those names to a cosmetic at all.

How does what a procedure does differ from what a cosmetic does?

A cosmetic reaches the outermost layer, the stratum corneum; anything that acts below it belongs to procedures. The evidence for PDRN all comes from studies that injected it directly into the dermis, where wrinkles, texture, and elasticity improved (Lampridou et al., 2025). A fractional laser makes a dense pattern of tiny thermal wounds, each about 100 micrometers wide and 300 micrometers deep, and changes the skin as those wounds close. The surface closes within a day, and three months later the structure of the upper dermis had changed (Manstein et al., 2004). Radiofrequency, widely used for firmness, heats the dermis instead of wounding it, degrading collagen so that what follows remodels and contracts it and reduces laxity (Elsaie, 2008). The stratum corneum is 10 to 20 micrometers thick, and lasers and radiofrequency work in the dermis, more than 15 times deeper. A cosmetic, by contrast, stays within the stratum corneum (how deep into the skin a cosmetic goes).

How far does the law let a cosmetic ad go?

In Korea, Article 13 of the Cosmetics Act bans advertising that goes beyond what a cosmetic is, and the food and drug authority's labeling and advertising guideline turns that ban into a list of forbidden expressions. On that list are "Botox," "filler," "fat volume creation," and "procedure-related expressions such as laser or carboxy" (Ministry of Food and Drug Safety, 2025). A cosmetic ad that names a procedure is using words the law forbids. Claims that a doctor developed or recommends the product cannot be used even when true, and that holds even when the company's head is a doctor. "For dermatology procedures" and "hospital-use" are on the same list. Ads claiming that needles or microneedles "pass through the epidermis and reach the dermis" for a procedure-like effect are banned too (Korea Cosmetic Association, 2025). The only procedure-related claim the rules allow is "the ordinary soothing effect of a cosmetic before and after a procedure."

So how does a cosmetic support a procedure, and where is it better than one?

A cosmetic's place is to protect the skin before and after a procedure. Redness after a laser is the skin closing a wound, so during that time thorough moisturizing and sun protection are essential (Metelitsa & Alster, 2010). The enzymes that cut collagen increase with UV exposure (Fisher et al., 2002), so collagen newly built by a procedure is cut again if the skin is exposed to UV. A procedure changes the skin; a cosmetic protects the skin that has changed. Where a cosmetic beats a procedure is in stopping change before it starts. People who used sunscreen daily were 24% less likely to show skin aging progression over 4.5 years than those who used it only when they chose to (Hughes et al., 2013). A procedure reverses change that has already happened; it does not stop change before it starts. There is also one route by which a cosmetic acts as far as the dermis. Retinol is small enough to enter the skin, where it is converted to retinoic acid and binds to the cells that make collagen; in the skin of people in their 80s, fine wrinkles improved after 24 weeks (Kafi et al., 2007). That is a different kind of change from what a procedure delivers in one session.

In short, there is no such thing as a "clinic-grade" cosmetic

Procedure names in a cosmetic ad are expressions the law forbids, so you can read such an ad as exaggerated. Lasers and radiofrequency work in the dermis, 15 times deeper than the stratum corneum is thick (Manstein et al., 2004); a cosmetic protects the skin from the stratum corneum; and slowing aging before it starts is the job of daily sun protection. The difference between applying and a procedure is covered in our note on PDRN serum versus injection.

One step today

• If an ad names a procedure, assume the product cannot deliver what the procedure does, and filter it out. Then read the other claims in the same ad ("high concentration," "reaches the dermis") with the same eye.
• If you have had a procedure or have one coming up, cut your skincare down to two things: moisturizer and sunscreen. Adding acids or retinol to skin that is still closing irritates it, and UV increases the enzymes that cut newly formed collagen. If redness lasts beyond the period the clinic told you to expect, ask the clinic.