Overview

The ISDIN Flavo-C Ultraglican Vitamin C & Hyaluronic Acid Serum is a lightweight, hydrating formula designed to brighten and protect skin. This serum provides a powerful defense against oxidative stress while deeply moisturizing, leaving your complexion with a natural, radiant glow. Suitable for daily use on both the face and neck, it helps enhance the overall appearance of your skin. With its non-greasy texture, this serum quickly absorbs, making it an easy addition to any skincare routine.

Key Ingredients & Benefits

At the heart of this serum is Vitamin C, a potent antioxidant that brightens skin and shields it from environmental damage. The addition of Hyaluronic Acid works to deeply hydrate and plump the skin, reducing the appearance of fine lines. UltraGlycans, a unique complex in the formula, further supports skin structure by improving elasticity and maintaining hydration. Together, these ingredients provide a powerful, anti-aging treatment that targets both hydration and skin radiance.

Best For

This serum is ideal for anyone looking to improve their skin's radiance and hydration levels, especially those with dry or dull skin. It’s suitable for all skin types, including sensitive skin, due to its gentle formula. If you’re seeking an effective anti-aging solution, the serum can also help reduce the appearance of fine lines and promote a smoother, more youthful complexion. Whether you have concerns about skin texture or pigmentation, this serum offers comprehensive care for your skincare needs.

User Feedback

Many users have shared their positive experiences with this serum, noting improved skin texture and a healthy glow after regular use. Its lightweight and non-greasy formulation is a frequent highlight, making it suitable for layering with other products. However, some users have expressed a preference for a fragrance-free option, as the mild scent may not appeal to everyone. Overall, the serum’s ability to hydrate and enhance skin appearance has earned it high praise, though some users wish for a larger size for longer-term use.

Pros

  • This serum effectively brightens the skin and provides noticeable hydration throughout the day.
  • Many users appreciate the lightweight, non-greasy texture that absorbs quickly without leaving a sticky residue.
  • It works well under makeup, making it a good option for daily office use.
  • The formula is gentle, making it suitable for those with sensitive skin looking for an anti-aging solution.
  • Regular use of this product helps improve skin texture, leaving the face with a radiant glow.
  • It combines powerful ingredients like Vitamin C and Hyaluronic Acid, providing both hydration and skin protection.

Cons

  • Some users feel that the serum's fragrance is mild but still noticeable, with some preferring fragrance-free options.
  • A few individuals with very oily skin found it a bit too hydrating, leaving a slight shine after application.
  • Users in warmer, more humid climates reported that it felt a bit heavy on the skin during the hotter months.
  • It may not provide sufficient hydration for those with very dry or dehydrated skin without a heavier moisturizer.
  • While the serum works well for many, those expecting rapid anti-aging results may find it too slow in showing noticeable effects.

Ratings

After analyzing verified user reviews worldwide across multiple platforms and languages, we have compiled the following ratings for the ISDIN Flavo-C Ultraglican Vitamin C & Hyaluronic Acid Serum. Only high-quality, authentic feedback was considered, with spam, bot-generated, and exaggerated reviews filtered out. The following scores reflect both the positive aspects and areas where users feel there could be improvements, giving a well-rounded view of the product's performance.

Effectiveness in Brightening
88%
Many users report that this serum visibly brightens their skin over time, helping to even out complexion and reduce dullness. The combination of Vitamin C and UltraGlycans delivers noticeable results for a radiant glow, especially when used consistently in daily routines.
A few users mentioned that while the serum does provide some brightening effects, the results are slower to show for those with darker spots or deep pigmentation. Some also found the effect to be subtle compared to other stronger Vitamin C serums.
Hydration Performance
91%
This serum is highly praised for its deep hydration. Buyers with dry skin found that it helps keep their skin moisturized throughout the day, contributing to smoother texture and a healthier look. The addition of Hyaluronic Acid ensures lasting moisture without feeling heavy.
While most users appreciate the hydration, a small group mentioned that it wasn't quite enough for those with extremely dry skin during colder months. Some also felt that it required a separate moisturizer for optimal results.
Texture & Feel
85%
Users frequently highlight the lightweight and non-greasy texture of this serum, which absorbs quickly without leaving any sticky residue. It’s ideal for layering under makeup or using as part of a daily skincare routine, making it a great option for those with oily or combination skin.
However, a few reviewers noted that the serum can feel a bit tacky for some people, especially if over-applied. For those with sensitive skin, a few reported a slight residue left behind that didn't sit well under their regular sunscreen or moisturizer.
Anti-Aging Benefits
82%
18%
Several users have seen noticeable improvements in fine lines and skin elasticity after long-term use. The combination of Vitamin C and Hyaluronic Acid appears to support anti-aging benefits, leaving the skin feeling firmer and more plump.
While the anti-aging claims are generally positive, some customers feel that the serum doesn't provide dramatic enough effects compared to more potent alternatives. People looking for more immediate wrinkle reduction may find it lacking.
Skin Sensitivity Compatibility
90%
The gentle formulation is often praised by those with sensitive skin, as it doesn’t cause irritation or redness. Users with easily irritated or reactive skin report that this serum is soothing and hydrating without triggering breakouts or sensitivity flare-ups.
However, a few people with ultra-sensitive skin mentioned that even this mild formulation could cause slight tingling upon first use. Some prefer a completely fragrance-free option and feel that the mild scent could be a concern for those with sensitivity to fragrances.
Absorption Rate
87%
The serum absorbs quickly into the skin, which users appreciate for its ease of application in their skincare routine. This fast absorption allows for layering other products like moisturizers or sunscreens without feeling overloaded.
Some users found that it absorbed a bit too quickly, leaving them with less time to massage it in. This quick absorption also made it less hydrating for users who prefer more time to work the product into their skin for longer-lasting moisture.
Fragrance Appeal
76%
24%
Many users describe the fragrance as light and refreshing, not overpowering. The mild scent makes it suitable for those who dislike strong-smelling skincare products, offering a pleasant experience without lingering fragrance.
However, some buyers pointed out that the scent is still noticeable and could be bothersome for people with a sensitivity to fragrance. A few customers wished for a fragrance-free version to cater to those with fragrance sensitivities.
Packaging & Dispensing
84%
Users appreciate the hygienic and easy-to-use pump dispenser, which provides a controlled amount of product with each use. The packaging is sturdy and practical, making it travel-friendly without worrying about leaks.
On the downside, a few users felt that the pump could be a bit difficult to control towards the end of the product’s life, leading to some product waste. Others found that the bottle size didn't last as long as expected for daily use.
Value for Money
80%
20%
Most users believe the serum offers great value for its high-quality ingredients and effective results. It’s a solid investment for those looking for both hydration and anti-aging benefits without the high price tag of some premium brands.
However, some buyers mentioned that while the serum performs well, it’s a bit pricey for the 1 oz size, especially if used daily. They felt that the price could be more competitive given the size of the bottle.
Long-Term Results
78%
22%
Several users noticed improvements in their skin’s texture and hydration after consistent use over several weeks. Many report seeing smoother, brighter skin with continued application.
A few customers felt that the long-term effects were not as dramatic as expected. While the serum does provide good hydration, some didn’t see significant improvements in fine lines or overall skin texture after prolonged use.
Ease of Application
88%
The serum’s lightweight formula and smooth consistency make it easy to apply, and it spreads evenly over the face and neck. It absorbs quickly, making it simple to incorporate into a fast-paced morning routine.
For some users, the application process was a bit less enjoyable due to the serum’s initial stickiness before it fully absorbs. This might require more patience for those who prefer products that sink in immediately.
Overall Satisfaction
86%
The majority of users report being very satisfied with the overall effects of the serum. It effectively hydrates, brightens, and improves skin texture, making it a staple in many skincare routines. It’s also generally well-tolerated by sensitive skin types.
A few users, however, felt that while the product delivers good hydration, the brightening and anti-aging benefits could be more pronounced. Some expected quicker results or stronger effects for the price.

Suitable for:

The ISDIN Flavo-C Ultraglican Vitamin C & Hyaluronic Acid Serum is ideal for individuals looking to boost their skin's radiance and hydration. It works particularly well for those with dry or dehydrated skin, as it provides deep moisture and helps plump up fine lines. The lightweight, non-greasy formula makes it an excellent choice for users with sensitive skin, as it’s designed to be gentle without causing irritation. This serum is also perfect for those seeking anti-aging benefits, offering a gradual reduction in the appearance of fine lines while enhancing skin texture. It can be used daily on both the face and neck to promote a healthy, glowing complexion, making it suitable for a wide range of skincare routines.

Not suitable for:

While the serum is generally well-tolerated, it may not be the best fit for individuals with extremely oily skin, as some users found it could feel slightly tacky before fully absorbing. Those with very specific fragrance sensitivities may also not appreciate the mild scent, although it is subtle. Additionally, people who are looking for quick, dramatic anti-aging results might find that the serum works more slowly than expected. Buyers who expect the product to be highly hydrating during colder months or who have excessively dry skin may need to pair it with a heavier moisturizer to achieve optimal results.

Specifications

  • Type: Serum designed for facial and neck application.
  • Key Ingredients: Contains Vitamin C, Hyaluronic Acid, and UltraGlycans for hydration, skin brightening, and anti-aging benefits.
  • Formulation: Lightweight and non-greasy formula that absorbs quickly into the skin.
  • Skin Type: Suitable for all skin types, including sensitive skin.
  • Size: 1 fl oz (30 mL) per bottle.
  • Application: Recommended for daily use on the face and neck, both morning and night.
  • Hydration: Provides deep hydration, helping to plump the skin and reduce the appearance of fine lines.
  • Anti-Aging: Helps reduce the appearance of fine lines and promotes smoother, firmer skin.
  • Fragrance: Mild fragrance; some users prefer fragrance-free options.
  • Texture: Has a lightweight, non-greasy texture that leaves skin feeling smooth and moisturized.
  • Vitamin C: Brightens and protects skin by neutralizing free radicals and promoting an even skin tone.
  • Hyaluronic Acid: Deeply hydrates and plumps skin, reducing the appearance of fine lines.
  • UltraGlycans: Helps support skin structure, maintain hydration, and improve skin elasticity.
  • Skin Radiance: Regular use improves skin texture and gives a radiant glow.
  • Suitability for Sensitive Skin: Formulated to be gentle enough for sensitive skin, minimizing irritation.
  • Packaging: Comes in a 1 fl oz glass bottle with a dropper for easy application.
  • Shelf Life: Recommended to use within a few months after opening for optimal freshness and effectiveness.
  • Absorption: Absorbs quickly without leaving a sticky or greasy residue.
  • Usage Frequency: Can be used daily, both in the morning and at night, as part of your skincare routine.

FAQ

To use this serum, apply a small amount to your face and neck after cleansing and before moisturizing. Gently massage it into your skin until fully absorbed. For best results, use it in the morning and evening as part of your daily routine.

This serum contains Vitamin C, which brightens and protects the skin by neutralizing free radicals. Hyaluronic Acid deeply hydrates and plumps the skin, helping to reduce fine lines. UltraGlycans support skin structure, maintain hydration, and improve elasticity for a smoother, firmer appearance.

Yes, this serum is formulated to be gentle and is suitable for all skin types, including sensitive skin. Many users with sensitive skin report that it provides hydration and radiance without causing irritation.

Yes, the combination of Vitamin C and Hyaluronic Acid helps to reduce fine lines and promotes smoother skin by improving hydration and elasticity. Consistent use can improve skin texture and give a more youthful appearance.

Many users report seeing improvements in their skin texture and radiance after 2–4 weeks of consistent use. Results may vary depending on individual skin concerns and the regularity of use.

Yes, this serum is lightweight and non-greasy, making it an excellent base for makeup. It absorbs quickly, leaving your skin hydrated and smooth, without feeling sticky or oily.

The serum has a mild fragrance that many users find pleasant. However, if you prefer fragrance-free skincare, this may not be ideal for you, as some users prefer products without any scent.

Store this serum in a cool, dry place away from direct sunlight. Keep the cap tightly closed to preserve the integrity of the ingredients, especially Vitamin C, which can degrade when exposed to air or light.

Yes, this serum can be easily incorporated into your skincare routine alongside other products like moisturizers or sunscreens. However, if you're using other Vitamin C products, it's recommended to space them out to avoid irritation.

Yes, this serum's lightweight, non-greasy formula makes it suitable for oily and acne-prone skin. It provides hydration without clogging pores, and the Vitamin C helps with skin clarity and brightness.