Dr Sam’s Flawless Nightly Serum Versus K-Secret Seoul 1988 Serum Retinal Liposome 2% + Black Ginseng
Updated on April 01, 2024
Overview
What they are
These products are both reef safe serums. They have a total of 6 ingredients in common
Cool Features
They both contain niacinamide and retinoid
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any parabens or sulfates
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
Dr Sam’s Flawless Nightly Serum 20 ingredients
K-Secret Seoul 1988 Serum Retinal Liposome 2% + Black Ginseng 41 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Dr Sam’s Flawless Nightly Serum 20 ingredients
K-Secret Seoul 1988 Serum Retinal Liposome 2% + Black Ginseng 41 ingredients
Key Ingredients
Benefits
Concerns
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.
Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterButylene Glycol (or BG) is used within cosmetic products for a few different reasons:
- It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
- It is a humectant, which means that it helps attract moisture into the skin.
- It helps improve product application.
- It has mild preservative properties.
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Niacinamide has emerged as an all-star ingredient due to its many benefits.
It is known to treat acne by reducing inflammation. It also helps fade dark-spots and strengthen the skin by promoting the growth of the ceramide barrier.
Other benefits include smoothing wrinkles and minimizing redness.
The cherry on top? Niacinamide can also help build keratin, a protein that keeps skin firm.
When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.
Niacinamide can be mixed with other ingredients to boost benefits. For instance, it has shown to be effective when used with copper, folic acid, and zinc to treat acne.
Learn more about NiacinamideGlycerin is already naturally found in your skin. It helps moisturize and protect your skin.
A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.
As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.
Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.
Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.
In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.
This ingredient is organic, colorless, odorless, and non-toxic.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinBakuchiol is a plant-derived antioxidant (it's vegan!). It is often called the replacement for retinol although it is not part of the same family.
It has similar effects as retinol: skin smoothing, reducing discoloration, and preventing wrinkles. It does not cause as much irritation as traditional retinoids.
Bakuchiol works by breaking down free radicals and stimulating collagen production in skin.
Combining bakuchiol with retinol will not have adverse side effects. Studies show using them will just boost the benefits. Bakuchiol is also found to help stabilize retinol.
While bakuchiol does not make the skin more sun sensitive, we recommend wearing SPF on a daily basis.
Read more about traditional retinol
Learn more about BakuchiolDisodium EDTA plays a role in making products more stable by aiding other preservatives.
It is a chelating agent, meaning it neutralizes metal ions that may be found in a product.
Disodium EDTA is a salt of edetic acid and is found to be safe in cosmetic ingredients.
Learn more about Disodium EDTAIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Dr Sam’s Flawless Nightly Serum 20 ingredients
K-Secret Seoul 1988 Serum Retinal Liposome 2% + Black Ginseng 41 ingredients

Reviews
Here's what our community thinks
Dr Sam’s Flawless Nightly Serum 20 ingredients
When I use this I wake up with tight, uncomfortable skin. My smile wrinkles show more than when I go to bed with just a moisturiser. I can't recommend it for folks with atopic skin.
K-Secret Seoul 1988 Serum Retinal Liposome 2% + Black Ginseng 41 ingredients
Worked almost right away, by smoothing my skin, giving me smaller pores and improved fine lines. Definitely a staple.