Why must Lenin’s preserved body receive periodic treatment?

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surgeon; American Civil War — embalming An embalming surgeon at work on a soldier's body during the American Civil War.

The preservation of Vladimir Lenin’s body is not a permanent state, as arterial embalming is inherently temporary. Even with specialized preparation, the body requires periodic renewal treatment to maintain its appearance.1

The primary objective of modern embalming is to provide a lifelike appearance for mourners during the period a body is on public display. Because the chemical processes used—typically involving Formalin—do not halt decomposition indefinitely, ongoing maintenance is necessary to prevent the remains from shriveling or discoloring. This ensures that the Lenin Mausoleum continues to serve its intended purpose as a site for visitors to pay their respects.12