Jan Marini

Jan Marini Age Intervention Duality MD


Please email hello@harbenhouse.com to inquire about purchasing this MD product formulation. Thank you.


Addresses even the most stubborn adult acne while simultaneously minimizing the appearance of fine lines and wrinkles. Its unique dual chamber dispensing solution combines some of the most proven, yet previously incompatible, technologies in one product. The maximum allowed percentage of ultra-micronized benzoyl peroxide, highly concentrated all-trans-retinol, green tea extract, anti-aging peptides, advanced hydrators and antioxidants deliver unparalleled results in an easy to use solution.

Key Ingredients: 

  • 10 % Ultra-Micronized Benzoyl Peroxide
  • All-Trans-Retinol
  • Anti-Aging Peptides
  • Green Tea Extract
  • Chrysin
  • Alpha-Bisabolol
  • NHS (N-Hydroxysuccinimide)
  • Hyaluronic Acid


  • Complete dual-purpose acne and anti-aging solution
  • Ultra-micronized BPO for increased penetration and efficacy in treating even the most stubborn acne without dryness or irritation
  • Retinol, anti-aging peptides and antioxidants combine for maximum anti-aging benefits
  • Significant moisturizers for improved hydration and barrier function
  • Unparalleled user experience, satisfaction and compliance


Ideal For: Normal, Dry, Oily, Acne-Prone

Size: 1 fl oz

How to Use

Clean the skin thoroughly before applying this product. This product contains two parts. Dispense and briefly mix together one pump of product from each of the two chambers on your palm. Cover the entire affected area (not a spot treatment) with a thin layer one to three times daily. Because excessive drying of the skin may occur, start with one application daily, then gradually increase to two or three times daily if needed or as directed by a physician. If bothersome dryness or peeling occurs, reduce application to once a day or every other day. If going outside, apply sunscreen after using this product.


Anti-Acne Cream
Active Ingredient: Benzoyl Peroxide 10%
Inactive Ingredients: Water/Aqua/Eau, Propylene Glycol, Glycerin, Sorbitol, Polyacrylamide, C13-14 Isoparaffin, Cyclopentasiloxane, Cyclohexasiloxane, Carbomer, Laureth 7, Triethanolamine, Disodium EDTA, Diazolidinyl Urea, Methylparaben, Propylparaben

Anti-Aging Face Cream
Water/Aqua/Eau, Caprylic/Capric Triglyceride, Glycerin, Cyclopentasiloxane, Glyceryl Stearate, Polysorbate 20, Carthamus Tinctorius (Safflower) Seed Oil, Polysorbate 60, Stearic Acid, Butyrospermum Parkii (Shea) Butter, Stearyl Alcohol, Retinol, Myristoyl Tripeptide-4, Sorbitol, Bisabolol, Sodium Hyaluronate, Camellia Oleifera (Green Tea) Leaf Extract, Palmitoyl Tetrapeptide-7, Palmitoyl Oligopeptide, Chrysin, Dimethicone, Cyclohexasiloxane, Dimethicone/Vinyl Dimethicone Crosspolymer, Glyceryl Acrylate/Acrylic Acid Copolymer, Steareth-20, N-Hydroxysuccinimide, Triethanolamine, Carbomer, Hexylene Glycol, Ethylhexylglycerin, Caprylyl Glycol, BHT, Phenoxyethanol


click here to see Courtney and Jan Marini discuss Duality and acne in general 

Customer Reviews

Based on 3 reviews
agnija troyan
Must have

I forgot how I lived it! If you have acne, you need it! It will help you! I am almost 40 and I know there are deeper issues but while working on those you also need something topical and this one thing is all you need!

Miracle product for acne!

I’ve struggled with severe acne all over my face for over 7 years both inflamed and non inflamed and tried EVERYTHING from every medical grade line and nothing ever worked until I discovered this. I’ve been using this for a few years now and will never be without it. This is the only product to ever clear my skin and continues to keep my skin clear even after using for the past 3 years. I no longer run to the mirror every morning fearing how many new breakouts have appeared overnight. If you struggle with acne, do yourself a favor and please try this. I promise you won’t regret it!

Rachel E.
Best anti acne product!

This is so gentle, I didn't receive any irritation and my acne is significantly reduced, no more cysts.