This is a very good serum which works. To those who say the hole is too small for the product to come out: please look at the bottle! It has a rubber bottom, just press on it while the bottle is upside down.

IT was a great product. You can notice a very good improvement and maintain the good, nice, firm and soft effect on your skin. With just a drop everyday. It was one of my favorites

Absolutely love it, works wonders, my wrinkle disappeared, face much firm than before, the best product I have ever used on my face!

Bonne tension de la peau qui efface le rides et redonne un certaine juvénilité au visage

I incorporated this product 12 days ago in my morning & evening routine on my freshly washed face & I noticed that my face is firmer & the fine lines around my eyes have diminished. Every morning, I was my face with Biosource purifying foaming cleanser, pat my face dry, apply the uplift cure, then the Blue Therapy Uplift Day cream. The same routine before bed. Family & friends have also noticed how wrinkle free my face is at 54; so I've been telling them to use Biotherm. I have been using Biotherm for the last 5 years & my skin has never been better

nothing exceptional , didn't notice any change in skin

Sérum parfait pour redonner de la clarté et de la souplesse à la peau

I thought it had a bigger size. It is difficult to apply because of the bottle design, which could have a bigger hole to drop the liquid.

Je n'ai pas aimé ce sérum. Je l'ai trouvé trop liquide et personnellement je n'ai vu aucune amélioration.

I have been using this along with another serum and my skin is the best it's ever been. I am 64 and my skin literally came alive after using this product