Korean and Imported Botulinum Toxin: Comparing Effects, Duration, and Resistance

The word ‘Botox’ is often used for botulinum toxin treatment generally, but different products exist. Descriptions such as ‘Korean products act quickly and imported ones last longer’ oversimplify the products and treatment conditions. Before country of manufacture, check the product name, the evidence for its use in the area, and why your clinician recommends it.

You must also be clear about what you want to improve to make a comparison. Explain first whether you are concerned about expression lines or seeking another type of change. Even with the same product, different goals and treatment areas may require different criteria for assessing results.

The US prescribing information for BOTOX Cosmetic states that its potency units cannot be directly compared with or converted into units of other botulinum toxin products.^[1]Therefore, the same unit count on a price list does not establish that treatments are equivalent.

Consumers do not need to create their own conversion tables. Ask the clinician which product and areas will be treated and why the proposed dose is appropriate. If you want to compare a previous treatment at another clinic, it is better to bring records showing the product name and date than to rely on remembered numbers.

A feeling that the effect lasts less time than before does not establish resistance. First review the previous product, treatment areas, intervals, and when and how results were assessed with your clinician. It is important to distinguish a perceived lack of effect from a diagnosis of its cause.

Do not accept unverified claims that switching to a particular imported product resolves resistance or that ‘pure toxin’ never causes resistance. Additional treatment or a product change requires medical assessment. Do not repeatedly seek treatments at arbitrarily short intervals to compensate for a feeling of insufficient effect.

BOTOX Cosmetic prescribing information includes contraindications such as infection at the injection site or ingredient hypersensitivity, and warns that difficulty swallowing, speaking, or breathing requires immediate medical attention.^[1]An overseas document does not replace the approved information for all Korean products, so obtain a separate explanation of the actual product that will be used.

Choosing a product is not a matter of ranking countries of manufacture. It is a process of understanding the exact product, expected changes, assessment timing, and response to adverse reactions. Even when comparing costs, check that this information is explained on equivalent terms to make a meaningful choice for yourself.