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The video effectively demonstrates product efficacy through a clear, measurable before-and-after progression, appealing to viewers interested in hair growth solutions.

The creator measures their hair length over several weeks while using Anwen hair growth serum, showing the progression from 71cm to 75cm. The video documents the hair growth achieved with the product.

Anwen wcierki (hair growth serum): ACTS - used by the creator to measure hair growth over time. Removing it would change the video's purpose. Kosmetyki Anwen (brand): APPEARS - mentioned in the caption as the maker of the hair growth serum. Removing it would not change what happens in the video.