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The GM Collin philosophy of beautiful skin is rooted in bio-technology – a combination of plant and marine derived ingredients and cutting edge technology. The brand offers enjoyable and effective treatments as well as an extensive range of retail products to maintain the benefits and results of clinical treatments at home.


Swissline is a prestige brand of skincare that combines “back to nature” simplicity with pharmaceutical sophistication. Their products are designed to preserve youth and visibly correct the first signs of aging. For the modern, discerning woman.

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The brand’s founder, Nadia Payot, used her skills as a physician for the benefit of women’s health and well being. She was a precursor of the current trend of combining spa pampering with medical and technological breakthroughs.  Today, Payot products are saturated with active ingredients to give clients visible, long lasting results.

Other brands carried at Merveille:

  • Physiodermie
  • Pevonia
  • Gehwol
  • OPI

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