Glow Recipe Guava Vitamin C Bright-Eye Gel Cream Versus Medik8 C-Tetra Eye
Updated on January 19, 2024
Overview
What they are
These products are both vegan, cruelty-free, and reef safe eye moisturizers. They have a total of 2 ingredients in common
Cool Features
They both contain Vitamin C and Vitamin E
Suited For
They're both likely to be good for dry skin, brightening skin, reducing pores and better texture
Free From
They both do not contain any harsh alcohols, parabens or sulfates
What's Inside
They both contain oils
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Ingredient Info
Glow Recipe Guava Vitamin C Bright-Eye Gel Cream 48 ingredients
Medik8 C-Tetra Eye 10 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Glow Recipe Guava Vitamin C Bright-Eye Gel Cream 48 ingredients
Medik8 C-Tetra Eye 10 ingredients
Key Ingredients
Benefits
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Tetrahexyldecyl Ascorbate (THD) is a stable and oil-soluble form of Vitamin C.
THD is special in that it has the ability to travel deeper into skin than traditional ascorbic acid while maintaining the same skin benefits (double win!).
Because it’s oil-soluble, THD dives deep into your skin’s fatty layers (think ceramides and cholesterol) to fight off the kind of free radicals that mess with your skin barrier. This makes it a great pair with water-based vitamin C (ascorbic acid) that mainly works on the surface.
Even at just 0.1%, THD is already showing great antioxidant activity. When used up to 2%, it helps keep your skin happy and calm, especially when it’s stressed from pollution or sun.
Want to fade dark spots or tackle hyperpigmentation? You’ll want 5% or more. Pairing it with brightening buddies like niacinamide or licorice root gives even better results. One study even used 30% THD with other brighteners and saw real results on stubborn discoloration, even in melasma-prone skin.
A note on THD: It’s has a slightly silky, oily texture and usually shows up colorless or pale yellow (though the exact shade can vary by supplier).
While you can sneak it into water-based formulas, it really shines when paired with silicones or oils, which help your skin soak it up better.
THD is pretty stable, but it’s still vulnerable to degradation like ascorbic acid. Too much light or heat (above 113°F / 45°C) can break it down over time. Go for dark and opaque packaging that keeps it safe and shady!
Read more about other types of Vitamin C:
Learn more about Tetrahexyldecyl AscorbateThis oil comes from the seeds of the desert shrub called Jojoba. It is more commonly known as jojoba oil, a non-comedogenic oil.
Jojoba oil does not contain fragrance and has many fatty-acids, making it a great soothing ingredient.
It also contains Vitamin E, a great moisturizing ingredient. Vitamin E is also an antioxidant and protects your skin against oxidative damage.
This ingredient humectant properties, meaning it helps draw moisture from the air. This helps keep your skin hydrated.
While jojoba has antibacterial properties, it is only able to kill some strains of bacteria.
Studies also show it helps in wound healing. In fact, Indigenous cultures have used jojoba as a moisturizer and to help treat burns for centuries.
Fun fact: Jojoba oil similar to natural human skin sebum, so it has a great effect on dry skin. It is also promising with helping to regulate sebum production.
Due to its fatty acid content, Jojoba oil may not be fungal acne safe. We recommend speaking with a professional if you have any concerns.
Learn more about Simmondsia Chinensis Seed OilIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Glow Recipe Guava Vitamin C Bright-Eye Gel Cream 48 ingredients
Medik8 C-Tetra Eye 10 ingredients

Reviews
Here's what our community thinks
Glow Recipe Guava Vitamin C Bright-Eye Gel Cream 48 ingredients
I was ready to love this product as it has all the right stuff in, and it works, but damn, it makes the skin around my eyes sore and dry. It must be too much vitamin C for the sensitive skin around my eyes.