SISI
SISI High Jump 30, 30ml
SISI High Jump 30, 30ml
@cosme rating: 4.7/7.0
Moisturizing yet gentle and powerful care. This moisture is gentle.
✓ 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
Moisturizing yet powerful, it provides gentle care. This gentle, hydrating serum overcomes all skin concerns with ease. This 30% concentrated vitamin C serum contains a new moisturizing vitamin C derivative (3-glyceryl ascorbic acid (skin conditioning)), a derivative that can be stably incorporated into cosmetics, with a moisturizing, smooth texture and gentle application. Furthermore, it combines SISI's proud functional rose extract, Science Rose (Rosalicy (Damask rose flower water, Damask rose flower oil): moisturizing ingredient), with niacinamide, which is compatible with vitamin C, to create a unique formula that enhances the benefits of vitamin C. For all skin concerns, including dryness, texture, pores, firmness, and dullness due to dryness.
Ingredients
Water, 3-glyceryl ascorbate, glycerin, butylene glycol, pentylene glycol, rosa damask flower water, rosa damask flower oil, sodium tocopheryl phosphate, niacinamide, sodium citrate, citric acid, pentasodium pentetate, xanthan gum, phenoxyethanol
How to use
Use morning and evening, first thing after washing your face. 1. Lightly press the dropper head to dispense an appropriate amount (approximately 3-5 drops for the entire face) into the palm of your hand. 2. Gently blend into skin with your fingertips.
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 love I'm Your Hero and when I bought two bottles to stock up on, I happened to find a Megapo gift here, so I was lucky enough to try it out (a bit rude, lol). It's a vitamin C derivative, but this is my first time using it as a primer, and I'm sensitive, so I was a bit hesitant to use it. It's completely non-irritating! It doesn't have the sticky feeling that vitamin C typically has, but I'm not sure if it's really a primer. It didn't absorb well, like when you apply a toner without a primer serum. It's not bad, but I wonder if it would be better to use a primer serum first. lol After that, I went with Dr. Ci:Labo Lotion → COSRX Niacinamide → anua PDRN → Goodal Serum → Tuveil Emulsion. I usually use SUQQU primers, which have incredible penetration and suit my skin, so I'm not sure if I should switch. However, since I have 30ml, I'll consider using it in my morning skincare routine and see if it's good. ^ ^ I really recommend it for its non-sticky and non-irritating properties, so it's definitely worth a try.
I feel good when I use other companies' vitamin C serums, so I bought this one to try out their products. Even though it's supposed to be applied immediately after washing your face, I often forget and put on lotion instead, so when that happens I don't apply it again, but I use 3-4 drops almost every morning and night and it lasted me about a month. Just like the other companies, it gives my skin a clearer, brighter look. The ingredients are effective on pores, but the effect on the pores isn't that noticeable. I'm always bothered by the smell of vitamin C serums, but this one is almost odorless, which is a relief. I think I might try the one I was using again and if it doesn't make much difference, I'll buy this one again as it's easier to use and doesn't have a bad smell.
I tried it as a magazine supplement and loved it so much that I bought the actual product!!! I was looking for a Vitamin C serum with a smooth texture, and I was attracted to this one because it wouldn't interfere with my next skincare routine! The texture is easy to add to your skin, and it somehow brightens my skin and closes my pores!
I received this as a magazine supplement. First of all, it's very pleasant to use. It doesn't irritate my skin, and the scent isn't particularly bothersome. However, I only used 10ml this time, so I don't think I'll see any effect until I continue using it. Also, the price is a bit of a problem, so I'll consider buying it again.
It was easy to use without any irritation, but I didn't notice any tone-up effect, so I won't be buying it again.