“The strength of the association in between skin density and vitamin C consumption is engaging, “stated University of Otago’s Professor Margreet Vissers, senior author of the research study.

“We were shocked by the tight connection in between plasma vitamin C levels and those in the skin– this was a lot more significant than in any other organ we have actually examined.”

“We are the very first to show that vitamin C in the blood flow permeates all layers of the skin and is connected with enhanced skin function.”

“I am really pleased with my group and thrilled about what the information is informing us.”

The outcomes recommend that appeal actually does originate from within, supporting your skin function from the inside-out by providing vitamin C to the skin the method nature developed it– by means of the blood stream.

“We understand that vitamin C is needed for collagen production,”

“This reality has actually motivated the addition of vitamin C to lots of skin cream formulas.”

“However, vitamin C is extremely water soluble and inadequately soaked up through the external skin barrier.”

“Our research study reveals that the skin is exceptionally proficient at taking in vitamin C from the blood flow.”

“Uptake into the external epidermal skin layer likewise appears to be focused on.”

In the research study, the authors developed the association in between plasma and skin vitamin C levels, utilizing healthy skin tissue from clients going through optional surgeries.

They then included a before-and-after, dietary vitamin C intervention research study at 2 websites– in Christchurch, New Zealand, and Germany– each with 12 healthy individuals.

“All were advised to take in 2 kiwifruit daily– the equivalent of 250 micrograms of vitamin C– for 8 weeks,” Professor Vissers stated.

“We then gathered skin samples before and after the intervention, with different analyses permitting us to take a look at the skin basal layers in Christchurch and the external dermal skin layer and skin function tests in Germany.”

The scientists likewise determined skin sample regrowth– consisting of ultrasound checked steps of skin density, flexibility UV security and renewal of skin cells– offering a total image of skin function.

“The other truly significant finding revealed a considerable boost in the individuals’ skin density levels, showing collagen production and an upswing in the regrowth of their skin cells, simply put skin renewal,” Professor Vissers stated.

The researchers recommend that increasing your dietary vitamin C consumption will lead to reliable vitamin C uptake into all compartments of the skin.

“The crucial thing is to keep your plasma levels ideal, which we understand can be quickly accomplished in a healthy individual with a vitamin C consumption of around 250 mg each day,” Professor Vissers stated.

“The body nevertheless does not keep the vitamin, so we advise 5+ a day, every day, with among those 5 being a high vitamin C food, as an excellent practice to cultivate.”

The research study was released on October 28, 2025 in the Journal of Investigative Dermatology

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Juliet M. Pullar et alEnhanced Human Skin Vitamin C Levels and Skin Function after Dietary Intake of Kiwifruit: A High-Vitamin-C Food. Journal of Investigative Dermatologyreleased online October 28, 2025; doi: 10.1016/ j.jid.2025.10.587