This Best-Selling Professional Back Bar Size (2 oz) Vitamin C 20% Serum + Ferulic acid + Hyaluronic acid is the highest-quality Vitamin C 20% Serum available in today's cosmetic marketplace!

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Product Review

This Best-Selling Professional Back Bar Size (2 oz) Vitamin C 20% Serum + Ferulic acid + Hyaluronic acid is the highest-quality Vitamin C 20% Serum available in today's cosmetic marketplace!

Our Pro Size Vitamin C 20% Serum will provide your skin with the highest protection against UVA/UVB sun rays, environmental pollutants, and free radicals.

Our Pro Size Vitamin C 20% Serum provides your skin with 3 key ingredients listed below:

1. Vitamin C (L-Ascorbic Acid): An active form of Vitamin C occurs naturally in citrus fruits. This potent water-soluble antioxidant protects skin from oxidative damages caused by the sun rays (UVA/UVB radiation). It improves elasticity of skin by enhancing the production of collagen.

2. Ferulic Acid: A powerful antioxidant found in the cell walls of plants. This ingredient is predominantly effective at preventing sun damage.

3. Hyaluronic Acid: A naturally occurring polysaccharide responsible for tissue hydration and lubrication within the extra-cellular space of bodily tissues.

Due to the high demand of our Pro Size C 20%, at times we will be sold out. We apologize for the inconvenience and are working diligently to keep stock as much as possible.

Important - Beware of non-genuine or counterfeit CSS products'. We encourage you to purchase directly from Amazon Fulfillment or by us. Also, beware of generic or cheap Vitamin C Serums selling on Amazon where product does not come with a box, neither does seller have a company website, phone number, a business license, or is registered with the Secretary of State.


  • All Cosmetic Skin Solutions products' are Manufactured in our FDA-Registered laboratory facility under strict US FDA guidelines. Made in the USA. No Parabens. No Oils. Cruelty-Free.
  • This Best-Selling Professional Back Bar Size (2 oz) Vitamin C 20% Serum + Ferulic acid + Hyaluronic acid is the highest-quality Vitamin C 20% Serum available in today's cosmetic marketplace.
  • This Best Selling Vitamin C 20% Serum uses State-Of-The-Art technology combining 0.5% Ferulic acid (potent antioxidant found in cell walls of plants) with 20% pure L-Ascorbic acid (Vitamin C), and hyaluronic acid to boost performance benefits to effectively lighten, fade spots, and to promote an even tone.
  • This Vitamin C Serum stimulates collagen production and neutralizes free radicals.
  • The manufacturing date and time a product is applied are both critical components which define the performance level a topical antioxidant treatment will provide to the skin. Cosmetic Skin Solutions LLC manufactures our entire line of topical antioxidant treatments once per week to ensure absolute freshness and to optimize efficacy prior to use.

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