The History of Whoo
Cheongidan Rejuvenating Pro-Radiance Refining Essence
Product overview
Brand: The History of Whoo
Product Name: Cheongidan Rejuvenating Pro-Radiance Refining Essence
Korean Product Name: 천기단 화현 리파이닝 에센스
Capacity: 150ml
Formulated by: LG Household & Health Care
Manufactured by: LG Household & Health Care
Distributed by: LG Household & Health Care
Country of Manufacture: South Korea
Functional Cosmetic Certifications: Anti-Wrinkle
Original Retail Price: 150,000 KRW
Date of Release: July 2025 [pre-launched in Singapore in February 2025]
Shelf life: 36 months before opening. 12 months after opening.
Ingredients
Notable allergens: Alcohol Denat., Essential Oils, Fragrance, Niacinamide.
Product description
The History of Whoo’s “Cheongidan Rejuvenating Pro-Radiance Refining Essence” is an illuminating first-step essence designed to gently refine skin texture and promote a youthful radiance.
⬥ First-step essence to awaken the skin’s glow
The History of Whoo’s “Cheongidan Rejuvenating Pro-Radiance Refining Essence”: an illuminating and anti-aging first-step essence designed to smooth skin texture and awaken the skin’s glow.
[1] The product’s effectiveness in improving skin texture was evaluated in clinical testing through a reduction in the number of blobs (blob count), wherein a blob is defined as the enclosed area formed by the intersection of lines corresponding to the direction of skin texture.
Tests conducted by: Global Medical Research Center Co., Ltd.
Participants: 31 adults aged 20-56 (with a mean age of 40.323±11.244 years).
Date: 29 January – 28 February 2024.
[2] The product’s effectiveness in improving pore condition was evaluated in clinical testing on pores with a diameter of 0.5 mm or larger.
Tests conducted by: Global Medical Research Center Co., Ltd.
Participants: 31 adults aged 20-56 (with a mean age of 40.323±11.244 years).
Date: 29 January – 28 February 2024.
[3] The product’s effectiveness in improving skin barrier function was evaluated through clinical testing on skin with damage induced by physical stimulation.
Tests conducted by: Global Medical Research Center Co., Ltd.
Participants: 32 adults aged 20-56 (with a mean age of 40.719±11.286 years).
Date: 29 January – 1 February 2024.
⬥ The first step toward anti-aging begins with refining the skin’s outermost layer
When the skin’s 28-day turnover cycle becomes longer, it results in a build-up of dead skin cells, more noticeable pores, and skin aging.
Skin turnover cycle:
The first step toward anti-aging begins with refining the skin’s outermost layer.
⬥ Key active ingredients
The History of Whoo’s “Cheongidan Rejuvenating Pro-Radiance Refining Essence” is formulated with the following key active ingredients to smooth skin texture and illuminate skin from the very first step:
The History of Whoo’s “Cheongidan Rejuvenating Pro-Radiance Refining Essence” is formulated with Cheongidan’s unique exfoliation technology and illuminating anti-aging ingredients to refine skin texture and lay the groundwork for a firmer-looking complexion.
⬥ Radiant Refining Complex™: Cheongidan’s exclusive exfoliating technology
The History of Whoo’s “Cheongidan Rejuvenating Pro-Radiance Refining Essence” is formulated with Radiant Refining Complex™ (Hwa Hyun Refining Complex™), which provides a structured and gentle exfoliation system designed to promote skin turnover.
[4] Patent No. 10-2269121.
⬥ Lightweight watery gel formula
The History of Whoo’s “Cheongidan Rejuvenating Pro-Radiance Refining Essence” features a lightweight watery gel formula that glides effortlessly onto the skin and absorbs with a non-greasy, hydrating finish.
⬥ A first-step essence to prepare the skin
As the first step of your skincare routine, The History of Whoo’s “Cheongidan Rejuvenating Pro-Radiance Refining Essence” helps prepare the skin by meticulously refining its texture and minimising the appearance of pores.
⬥ Skin texture:
The History of Whoo’s “Cheongidan Rejuvenating Pro-Radiance Refining Essence” has been shown to improve skin texture with continued use, resulting in a smoother-looking complexion.
blob count5:
[5] “Blob” refers to the enclosed area formed by the intersection of lines corresponding to the direction of skin texture. Relationship between blob count and skin texture:
- Skin texture: The blob count reflects the uniformity and texture of the skin surface. An increase in blob count may generally indicate that the skin texture has become smoother and more uniform.
- Indicator of skin condition: The number and distribution of blobs help assess overall skin condition. For example, a high count of evenly distributed blobs may indicate a healthy skin condition.
In the images showing improvement in skin-texture density, the areas outlined in green are the blobs.
Density of intersecting lines6:
[6] Relationship between density of intersecting lines and skin texture:
- Skin elasticity: A higher density of intersecting lines is associated with greater skin elasticity, resulting in a smoother and firmer skin texture.
- Hydration retention: A higher density of intersecting lines enhances the skin’s ability to retain hydration. When the skin retains sufficient hydration, its texture becomes softer and more supple.
- Skin strength: A higher density of intersecting lines is associated with stronger, more resilient skin, contributing to a more uniform and firm texture.
Line intersection count7:
[7] Relationship between line intersection count and skin texture:
- Skin texture: The pattern and number of intersecting lines reflect the microstructure of the skin surface and are directly related to the look and feel of skin texture.
- Signs of aging: An increase in intersecting lines, or changes in their depth, may be a sign of skin aging, which present as changes in skin texture.
- Indicator of skin health: The number of intersecting lines reflects the health condition of the skin. Healthy skin exhibits a more uniform and dense number of intersecting lines.
Imaging showing improvement in skin-texture density:
⬥ Skin pores
The History of Whoo’s “Cheongidan Rejuvenating Pro-Radiance Refining Essence” has been shown to minimise the appearance of pores with continued use, resulting in a smoother-looking complexion.
Pore volume:
Pore area:
Skin pore area and volume imaging:
Skin pore long-axis length:
Skin pore long-axis length imaging8:
[8] The analysis included pores with a diameter of 0.5 mm or greater.
Tests conducted by: Global Medical Research Center Co., Ltd.
Participants: 31 adults aged 20-56 (with a mean age of 40.323 ± 11.244 years).
Date: 29 January – 28 February 2024.
⬥ “Do I need to use the product as the first step?”
Q. Do I need to use the product as the first step?
A. Not necessarily, but it’s usually best to apply lighter-textured cosmetics first for optimal absorption. Given its watery gel texture, we recommend using The History of Whoo’s “Cheongidan Rejuvenating Pro-Radiance Refining Essence” as the first step of your skincare routine to help smooth and prepare your skin.
To learn more about The History of Whoo’s “Cheongidan” line, including its ingredients and technologies, please refer to the main page.
Directions
In the morning and evening, use the product as the first step of your skincare routine after cleansing. Using your fingertips or a cotton pad, spread the product from the centre of your face outwards, avoiding the eye area, to refine skin texture.
Precautions
- General precautions:
- Immediately consult a dermatologist if symptoms such as red blotches, swelling and/or itchiness appear while using the product, or in case such symptoms appear when the skin is exposed to direct sunlight after use.
- Do not use the product on open wounds.
- Storage and handling precautions:
- Keep out of the reach of children.
- Keep away from direct sunlight.
Other editions and formulations
⬥ Previous formulations:
⬥ Special editions:
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⬥ South Korean retailers
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Review
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Source: The History of Whoo official website and official product packaging
Translation: © 2025 Odile Monod. You may not reproduce the above translation for commercial purposes without the express written consent of the translator.
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