TUNEMAKERS
TUNEMAKERS VC-6 Vitamin C Derivative, 10ml
TUNEMAKERS VC-6 Vitamin C Derivative, 10ml
@cosme rating: 5.3/7.0
For intensive care of dullness and pores
✓ 100% authentic
✓ Ships from Japan in 3-5 days
✓ Duties prepaid for US orders
✓ Tracked delivery via Japan Post
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What it is
This product contains a high concentration of penetrating vitamin C derivatives that penetrate deep into the skin. It brightens dull skin for a radiant, translucent complexion. It also balances moisture and oil, tightens skin, and tightens pores, leaving skin smooth and with less visible pores.
Ingredients
Water, magnesium ascorbyl phosphate, sodium malate, glycerin, hydrogenated lecithin, phenoxyethanol, xanthan gum, malic acid
How to use
We ship internationally from Japan!
Frequently Asked Questions
Is this authentic?
Yes. We only buy from official retailers and directly from the brands here in Japan. Never resellers, never grey market stock.
We are beauty lovers too, so we know the worry, especially with something you are putting on your face. Authenticity is 100% guaranteed by us.
What are your shipping rates?
On orders under US$75, shipping is a flat US$20 to the United States and US$10 to all other countries.
Orders of US$75 or more ship free, applied automatically at checkout. Your exact shipping cost is shown before you pay.
How long does delivery take?
These estimates are for International Airmail (Tracked) and include 3 to 5 business days of processing in Japan.
- United States: 12 to 15 business days
- Canada, United Kingdom, France, Germany: 9 to 12 business days
- Australia, New Zealand, Denmark, Finland, India, Indonesia, Italy, Netherlands, Spain, Sweden, Switzerland: 10 to 13 business days
- China, Hong Kong, Malaysia, Singapore, South Korea, Taiwan, Thailand, Vietnam: 8 to 10 business days
- Rest of the world: 11 to 18 business days
Actual delivery can be affected by customs clearance, seasonal congestion, or carrier delays in the destination country, all of which are outside our control.
Do you offer express shipping?
Yes. As of 22 July 2026, we offer International Express Mail through Japan Post. The cost is based on order weight and is calculated automatically at checkout.
Will I pay customs or import fees?
US orders: No. As of July 1, 2026, all US orders ship DDP (duties delivered prepaid), meaning we prepay all import duties on our end. Nothing is due at your door.
Orders outside the US: Possibly. Duties and import taxes are set by your local customs authority and are not collected at checkout, so any charges on delivery are your responsibility.
We're working on rolling out prepaid duties for more countries soon.
I bought this to improve rough skin. I apply it right after washing my face, and it absorbs quickly! I used to have constant acne, but since using this, it's calmed down considerably. The power of the concentrate is amazing. I'll continue using it.
I purchased this to treat pigmentation from burns. I was looking for a vitamin C derivative containing magnesium ascorbyl phosphate, so I'm glad I found it here. The liquid is smooth, but it feels a little jiggly. It's light and doesn't irritate. I've only just started using it, so I'm not sure how effective it is, but I'll continue using it until the pigmentation improves.
I bought this because my acne scars were not going away. After applying toner, I applied it over my entire face and to the areas of concern, and the next morning, I was surprised to see that my skin was one tone lighter! I use it during the day as well, and it seems to close my pores and make my skin less shiny than usual. I previously used Obagi serum, but I didn't feel any effect, and I was worried that vitamin-based serums would sting, but this product doesn't sting at all and seems to suit me better than Obagi. I've never felt such an effect from a skincare product, so I wish I had bought it sooner! I don't know about acne scars, but I'll keep trying it. I'd like to try their other products as well♪
I bought this product from Suzykirei and this is my fourth purchase! I only use it at night, either directly on the dark spots or by mixing it with my lotion. It's like a protective charm to prevent dark spots from getting darker, and I think it also brightens my skin tone!
It's great for dealing with dirty, enlarged pores and sebum. I bought it thinking it might also be effective for acne scars. This is a review after using up the whole bottle. ●The feeling of use was not strong and didn't sting. It's smooth and you can spread a small amount all over your face. ●Effects: First of all, my oil production during the day has become less. My foundation used to always smudge, but that's improved a lot. I'm not sure how effective it is on acne scars yet, but it did help new pimples heal quickly. I'd like to try other products, but I'd like to keep one on hand for acne!