Pure Vitamin C Serums Recommendation

‘ISOI Bulgarian Rose Blemish Care Serum’ and ‘Goodal Green Tangerine Vitamin C Serum’ are the most popular whitening serums in Korea – they have remained popular for a long time and sold remarkable quantities, with both releasing renewal versions (II and Plus) recently. Especially ISOI Blemish Serum has more than 16,000 positive reviews and ranked best-selling product in drug stores for over 7 years, moreover lots of awards given. If you haven’t tried this, go for it – the effects are worth it (don’t expect a miracle though – skincare is not a medicine, needs time to get a visible result).

They are not pure vitamin C serums – ISOI serum is formulated with Bulgarian Rose Water & Bulgarian Rose Oil with effective whitening ingredients without harmful chemical compounds, and Goodal Green Tangerine Vitamin C Serum is formulated with 70% of nature-derived vitamin C from green tangerine(Green Tangerine Extract & Ascorbyl Glucoside), it’s non-irritant and proven to improve skin tone & hyperpigmentation within 2 weeks. (If I add my opinion, ISOI Serum is good for fading Post-Inflammatory Hyperpigmentation, and Goodal is good to improve overall skin tone/ complexion)

In this post I’d like to give some options to improve your skin tone and fade hyperpigmentation, and ‘vitamin C’ is one of most powerful/ effective ingredients so these recommendations are pure vitamin c serums along with new and hot trend in Korea (please check the IOPE Vitamin C23 details in the previous post as eliminated here).

🍋Pure Vitamin C vs Vitamin Derivatives

The original and purest form of Vitamin C (L-ascorbic acid) is water-soluble, can penetrate through the epidermal layer to trigger collagen synthesis, however it can irritate skin.
Apart from pure Vitamin C, all other derivatives are more stable and generally non-irritating for the skin, however not as potent and can’t penetrate the surface of the skin easily.

🍋Recommendations for Pure Vitamin C Serum

These serums’ formula contains pure vitamin C(L-ascorbic Acid) and stabilized with their own special, patented technologies.

1.Innisfree Truecare Vitamin C 20 Ampoule (15ml)

• Ascorbic acid(20%), silicone oil free and proven to reduce size of pigmentation in 7 days
• Recommend for 20s ~ early 30s, Ideal for dehydrated oily, combination skin types
• Do not use with AHA/BHA/PHA (exfoliating properties) products
(image source from cafe.naver.com/cosmania/29422688 )

2.Liz.K First C Serum Pure Vitamin C 15% (10ml)

• Ascorbic acid(15%) + probiotics + Madecassoside
• Recommend for 30s ~ 40s, Ideal for Dry to combination skin types
(image source from Liz.K official site)
(image source from edit)

3.Dr. Different CEQ Anti-oxidant Serum (10ml)

• Ascorbic acid(15%) + Vitamin E + CoQ10, pH 3.5
• Recommend for 20s ~ 30s, Ideal for normal to dehydrated oily skin types
• Bit sticky residue so follow with a lotion/moisturizer to reduce sticky feeling
(image source from Dr.Different official site)

4.Vari:Hope 8 Days Pure Vitamin C Ampoule+ (plus, 15ml)

• Ascorbic acid(13.5%) + Cacadu Extract, watery texture & natural scent
• Proven to improve skin tone and reduce melanin in 8 days
• Do not use with Vitamin A & retinol as well as LED device or micro needle
(image source from VARI:HOPE official site)
image source from blog.naver.com/my1002

5.Missha Vita C Plus Spot correcting & Firming Ampoule

This serum is not high-concentration of pure vitamin C serum, however containing vita C Liposome(25%, encapsulized of vitamin C & collagen) and Ethyl Ascorbyl Ether (vitamin C derivatives) to stabilise and deliver active ingredients effectively, leaving skin brighter, firmer and radiant-looking. It has become very popular and the winner of 2020 GlowPick(one of best beauty communities) and also titled No.1 Consumer Report blind test.

🍋Other Pure Vitamin C Serums

I have categorized these 2 serums as ‘Other’ – By Wishtrend Pure Vitamin C 21.5% Serum is not as much as popular in Korea, however it is one of Amazon best-selling product, and the other one ‘Cosrx Real Fit Vitamin C Serum C23(Ascorbic acid(23%))’ has launched at overseas first – already sold out as if proving the brand popularity. If you haven’t tried or interested in ‘Cosrx Triple C Lightening Liquid(Ascorbic acid(20%))’ as only sold in Sokoglam in USA, this is the best time to wait. The product is available in official Cosrx store.


I am a still huge fan of pure Vitamin C serum even though it dries my skin especially appears dry patches around nose, and haven’t improved my skin as a miracle(only 2 weeks been using)😝 I am just obsessed about any type of vitamin C serums – wish tried more and introducing more. 😅

Vitamin C (Ascorbic acid) is so vital in skincare products, helping to increase collagen synthesis, providing mild exfoliation benefits and suppressing melanin production with antioxidant benefits.

Hope you find the best vitamin serums for your skin and can see visible results. Any questions about products or any tips please share with us.

🍋Check List

These lists may not work for every vitamin C serum, however generally proven to reduce skin irritation and better results so just reminding you.

• Use with Vitamin E to enhance the antioxidant effect of vitamin C and neutralize the free radicals
• Formula contains Ferulic Acid that help stabilize the serum and increase its photo-protective properties
• Formula contains niacinamide that help improve the appearance of enlarged pores, fine lines & dull skin, however not recommend for sensitive skin
• Pair with HA(Hyaluronic Acid) can yield notable results on the face, including reduced signs of wrinkles and dark spots on a daily use
• Do not follow with Retinol(a form of vitamin A) if the product warned. Some research showed that vitamin C can help retinol stabilise it and boost effectiveness, so better check the product details.
• Try to avoid AHA/BHA with vitamin C or use them on alternate days

Thanks for reading~

*Article source and image credits: ‘edit’ (naver post) .

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