Numbuzin No. 5 Goodbye Blemish Serum Versus ISOI ACNI Dr. 1st Speedy Spot

See how these products line up with your preferences

Here's our complete breakdown comparing the ingredients, attributes, and more of Numbuzin No. 5 Goodbye Blemish Serum versus ISOI ACNI Dr. 1st Speedy Spot .

Last updated on July 18, 2023. Published on October 08, 2023

Overview

What they are

These products are both cruelty-free and reef safe . They have a total of 5 ingredients in common

Suited For

They're both likely to be good for dry skin, brightening skin, sensitive skin, oily skin and dark spots

Free From

They both do not contain any parabens, silicones or sulfates

What's Inside

They both contain fragrances and oils

We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that need an update? Let us know.

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Numbuzin No. 5 Goodbye Blemish Serum

ISOI ACNI Dr. 1st Speedy Spot

Serum South Korean Brand

Facial Treatment South Korean Brand

Serum

Serums are highly concentrated with ingredients to provide skin with benefits. They should be used after cleansing and before moisturizing.

Facial Treatment

Facial treatments are specially designed to treat a skin concern. Acne treatments and anti-aging products are common examples of facial treatments.

Price

Shop

Buy No. 5 Goodbye Blemish Serum

Starts at $17.59

Shop

Buy ACNI Dr. 1st Speedy Spot

Starts at $16.22

Ingredient Info

Click any item below to learn more and view relevant ingredients.

Numbuzin No. 5 Goodbye Blemish Serum 39 ingredients

ISOI ACNI Dr. 1st Speedy Spot 17 ingredients

alcohol-free

silicon-free

fragrance-free

sulfate-free

paraben-free

oil-free

fungal-acne safe

reef-safe

eu-allergen-free

vegan

cruelty-free

alcohol-free

silicon-free

fragrance-free

sulfate-free

paraben-free

oil-free

fungal-acne safe

reef-safe

eu-allergen-free

vegan

cruelty-free

At a glance

Click on any of the items below to learn more

Numbuzin No. 5 Goodbye Blemish Serum 39 ingredients

ISOI ACNI Dr. 1st Speedy Spot 17 ingredients

Notable Ingredients

Vitamin C (3)

Niacinamide

Hyaluronic Acid

Benefits

Hydrating

Good For Oily Skin

Redness Reducing (9)

Reduces Irritation (6)

Skin Texture (3)

Reduces Large Pores (2)

Anti-Aging (4)

Dark Spots (6)

Scar Healing (5)

Acne Fighting (2)

Brightening (4)

Benefits

Hydrating

Good For Oily Skin

Redness Reducing (2)

Reduces Irritation

Dark Spots

Brightening

Concerns

Drying

May Worsen Oily Skin

Irritating

Rosacea

Eczema

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Ingredients Compared

Ingredients that are highlighted in purple are present in both products.

Numbuzin No. 5 Goodbye Blemish Serum 39 ingredients

ISOI ACNI Dr. 1st Speedy Spot 17 ingredients

Hippophae Rhamnoides Extract • Butylene Glycol • Methyl Gluceth-20 • Dipropylene Glycol • Glycerin • 1,2-Hexanediol • Niacinamide • Melia Azadirachta Flower Extract • Ocimum Sanctum Leaf Extract • Melia Azadirachta Leaf Extract • Curcuma Longa Root Extract • Corallina Officinalis Extract • Citrus Limon Peel Oil • Citrus Aurantium Dulcis Peel Oil • Citrus Aurantifolia Oil • Polygonum Cuspidatum Root Extract • Scutellaria Baicalensis Root Extract • Camellia Sinensis Leaf Extract • Glycyrrhiza Glabra Root Extract • Chamomilla Recutita Flower Extract • Rosmarinus Officinalis Leaf Extract • Centella Asiatica Extract • Ascorbyl Glucoside • Ascorbic Acid • 3-O-Ethyl Ascorbic Acid • Panthenol • Sodium Hyaluronate • Dipotassium Glycyrrhizate • Glycereth-26 • Ammonium Acryloyldimethyltaurate/Vp Copolymer • Polyglyceryl-10 Laurate • Carbomer • Allantoin • Tromethamine • Water • Hydrolyzed Jojoba Esters • Disodium EDTA • Citral • Limonene

Water • Alcohol Denat. • Xanthan Gum • Polyglyceryl-10 Laurate • Glycerin • Rosa Damascena Flower Oil • Caprylic/Capric Triglyceride • Melaleuca Alternifolia Leaf Oil • Salix Alba Leaf Extract • Olea Europaea Leaf Extract • Glycyrrhiza Glabra Root Extract • Equisetum Arvense Extract • Brassica Campestris Extract • Houttuynia Cordata Extract • Centella Asiatica Extract • Beta-Glucan • Castanea Crenata Shell Extract

Ingredients Side-by-side

Ingredients that are highlighted in purple are present in both products.

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Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Glycerin

What it does: Humectant, Skin Conditioning, Skin Protecting, Solvent

Community Rating: Loved

Glycerin 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 Glycerin

Numbuzin No. 5 Goodbye Blemish Serum contains this as ingredient number 5.

ISOI ACNI Dr. 1st Speedy Spot contains this as ingredient number 5.

Glycyrrhiza Glabra Root Extract

What it does: Bleaching, Emollient, Skin Conditioning, Smoothing, Soothing

Community Rating: Liked

Glycyrrhiza Glabra Root Extract is an extract of the roots of Licorice. It has been found to have several benefits such as skin hydrating, conditioning, and soothing.

One component, glabridin, has extra potent antioxidant and soothing properties. It has also been found to block pigmentation from UVB rays in guinea pigs.

Licorice Root also contains a flavonoid. Flavonoids are a natural substance from in plants. Flavonoids also have antioxidant properties.

Another component, glycyrrhizin, has been found to have anti-inflammatory and antimicrobial benefits. This may make licorice root extract effective at treating acne. However, more research is needed to support this.

Liquiritin is one of the flavone compounds found in licorice. It has been found to help lighten skin by preventing tyrosinase from reacting with tyrosine. When the two react, protein is converted to melanin. Melanin is the substance in your body that gives your features pigmentation.

Learn more about Glycyrrhiza Glabra Root Extract

Numbuzin No. 5 Goodbye Blemish Serum contains this as ingredient number 19.

ISOI ACNI Dr. 1st Speedy Spot contains this as ingredient number 11.

Centella Asiatica Extract

What it does: Cleansing, Skin Conditioning, Smoothing, Soothing, Tonic

Community Rating: Loved

Centella Asiatica Extract is derived from an herb plant native to Southeast Asia. It is rich in antioxidants and amino acids. In skincare products, Centella Asiatica Extract is used for its anti-inflammatory and soothing properties.

Many active components found in Centella Asiatica Extract, such as Madecassic Acid and Asiaticoside, encourage the skin to naturally produce hyaluronic acid. This helps keep our skin hydrated. Many of these components also show antioxidant activity and may help reduce the signs of aging.

Research shows Centella Asiatica can help increase Type I collagen production by increasing fibroblast production. Fibroblast helps form connective tissue.

The combination of all these properties makes Centella Asiatica Extract effective at soothing the skin.

Other components of Centella Asiatic Extract include Vitamin A, vitamin C, several B vitamins, and Asiatic Acid.

Recent studies found madecassoside may help prevent damage from UV rays by preventing UV-induced inflammation. Further research is needed.

This plant has been used as a medicine and in food for many centuries. As a medicine, it is used to treat burns, scratches, and wounds.

Learn more about Centella Asiatica Extract

Numbuzin No. 5 Goodbye Blemish Serum contains this as ingredient number 22.

ISOI ACNI Dr. 1st Speedy Spot contains this as ingredient number 15.

Polyglyceryl-10 Laurate

What it does: Skin Conditioning

Community Rating: Very Disliked

Polyglyceryl-10 Laurate is an ester of lauric acid and Polyglycerin-10.

Polyglyceryl-10 Laurate is a cleansing agent and emulsifier. It helps gather dirt, oil, and other pollutants to be rinsed away. As an emulsifier, it helps prevent ingredients from separating, such as oil and water.

Polyglyceryl-10 Laurate may not be fungal acne safe.

Learn more about Polyglyceryl-10 Laurate

Numbuzin No. 5 Goodbye Blemish Serum contains this as ingredient number 31.

ISOI ACNI Dr. 1st Speedy Spot contains this as ingredient number 4.

Water

What it does: Skin Conditioning, Solvent

Community Rating: Loved

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. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!

Learn more about Water

Numbuzin No. 5 Goodbye Blemish Serum contains this as ingredient number 35.

ISOI ACNI Dr. 1st Speedy Spot contains this as ingredient number 1.

Here's what our community thinks of the ingredients in these two products.

Numbuzin No. 5 Goodbye Blemish Serum 39 ingredients

ISOI ACNI Dr. 1st Speedy Spot 17 ingredients

62% are loved or liked

10% have mixed ratings

23% are disliked or very disliked

5% have no rating yet

35% are loved or liked

18% have mixed ratings

24% are disliked or very disliked

24% have no rating yet

Usage

Here's some more info on how this product is used by our community.

When to use

Numbuzin No. 5 Goodbye Blemish Serum 39 ingredients

ISOI ACNI Dr. 1st Speedy Spot 17 ingredients

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Reviews

Here's what our community thinks

Numbuzin No. 5 Goodbye Blemish Serum 39 ingredients

4.1 /5

from 12 ratings

Absorbs Well (1) Expensive (1) Irritating (1)

SkylerMikalson

4 months ago · Sensitive Skin

Review

I was not very knowledgable about skincare when I first tried this product, so I can't fault it for that, but I have to say it was extremely...

I was not very knowledgable about skincare when I first tried this product, so I can't fault it for that, but I have to say it was extremely irritating for me.

If you're new to skincare and are looking for something for acne, I do not think you should start with this.

I'm honestly not sure what is in this that is supposed to treat acne besides Niacinamide, which I've come to suspect my skin may not like in any amount anyway - I think it irritates me and causes flakiness.

And on top of the potentially irritating niacinamide, it has ascorbic acid, which is crazy given that Numbuzin is not marketing this as a vitamin C serum whatsoever. Vitamin C is a good ingredient for some people, but it doesn't treat acne, and ascorbic acid is the most irritating form of it. Why is it in here??

AND it has three essential oils in it! For what? Again, essential oils are irritants and, as far as I know do not treat acne.

So, why would you put highly irritating ingredients that do not treat acne in a product that is marketed as an acne treatment? If anything, those will only worsen acne, as irritated skin tends to be more acne prone.

I don't know, maybe I'm missing something, given that this product is so highly rated otherwise, but I just wouldn't recommend it to anyone, personally.