Dove released this new campaign in Portugal. The video has been seen more than 1.6 million times on YouTube.

Male participants' heartbeats were monitored as they were shown photographs of several women. First, the photographs depicted beautiful models. Makeup accented their features to make them look stunning and unique, but the participants didn't know them personally. Their heart rates were recorded at an average of 80 beats per minute.

Then, the participants were shown pictures of women they know - wives, sisters, grandmothers and daughters. The result was exquisite. While they shared sweet thoughts and memories about the beloved women in the photos, their heart rates skyrocketed over 100 beats per minute.

This experiment is proof true beauty is not skin-deep, but forged from the bonds and relationships we have with one another. True beauty is seen with the heart.

This article was adapted and translated from the original, "Este vídeo é a prova de que os homens não trocam as mulheres que amam por nada." It was originally published on familia.com.br.