Is this product tested on animals?

No. All the STEMBOTANY products are never tested on animal including BiopureMED serum. Also they are all plant based products.

The bottle xshoiws l-ascorbic acid their literature shows ester c. Which is it?

Hello. The listing has the old formula and its bottle. If you see the next page, it will show the current one. The serum is now formulated with the highest quality of C Ester, which is called AAP (aminopropyl ascorbyl phosphate) is a stable form of vitamin C known for reducing melanin production, which can minimize age and sun spots and hyperpigmentation.

Does this have the same % of Ferulic acid as Skinceuticals? Why does it cost so much less $.

#1. Most likely yes. It is well known in the beauty industry that less than 1% of Ferulic Acid is best to stabilize the Vitamin C serum. #2. It costs much less with low-profit margin because this brand is not an enormously huge brand as Skinceuticals. They do not need such huge expenses to maintain the company and advertisement marketing costs. Biopure+MED is only created in the lab, not in the mess production factory. The regular price of this serum is $59, and the price will be adjusted in Amazon in the near future.

What percentage of retinol is in the serum ?

The 2 best anti-aging ingredients in the world are Peptide and Retinol. For the retinol, if more than 1% is used, it can be dangerous to the skin (according to EWG) as it makes it extremely sensitive to sun exposure. According to BYRDIE, for the best result, the recommended amount for the normal skin is .25% and less for the sensitive skin. This serum contains less than .25% to be safe.

BioPureMED 25% Vitamin CE+Ferulic Acid Serum for Face: Anti Wrinkle Serum Retinol 22, Hyaluronic Acid Best Organic Korean Skin Care Vitamin C Serum/Face Moisturizer

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