MaryenB Brand FAQ | Ingredients, Routine Safety & Support
MaryenB Brand FAQ
What is MaryenB?
MaryenB is a Korean ingredient-led skincare brand by ThirtyTree Inc. (formerly Iso Lab. Inc.). We make focused facial serums and list key ingredient levels clearly on each product page and package label.
What serums does MaryenB make?
Our line covers six serum formulas, including azelaic acid, tranexamic acid, niacinamide, retinol, and vitamin C serums. Ingredient concentrations are listed on each product page.
How should I introduce a new serum?
Patch test before first use. Apply a small amount to a discreet area, wait 24-48 hours, and watch for irritation. If your skin reacts, stop using the product. Introduce one new active at a time and follow with moisturizer. Use sunscreen during the day.
Are the serums suitable for sensitive skin?
Our serums use well-known skincare ingredients at the concentrations listed on the product page. Sensitivity varies by person, so patch test first and start gradually. If you have a medical skin condition or are unsure, ask a healthcare professional before use.
What about the retinol serum?
The MaryenB Retinol serum is formulated with retinol 5000 IU/g, together with niacinamide and tranexamic acid. The concentration is stated on the product page and the package label.
Do you guarantee results?
No. Individual results vary, and we do not promise specific outcomes. Our descriptions explain what an ingredient is and how a serum is used.
How do I contact MaryenB?
Email m@maryenb.com and we will help with product questions and routine guidance.