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Here-Oh My First Serum

Here-Oh My First Serum

Product Description

Product overview

Made in Various INTERNATIONAL

A unique bubble-type serum-toner hybrid formulated with premium low molecular weight hyaluronic acid (under 500 daltons) for deep hydration. Enriched with evening primrose, macadamia seed oil, jojoba oil, ceramide NP, and panthenol to strengthen your skin barrier and soothe sensitive skin without stripping natural oils.

Fragrance-Free Alcohol-Free Colorant-Free Paraben-Free Silicone-Free Sulfate-Free Sensitive Skin Friendly Barrier Repair
Pregnancy
Yes
Fungal Acne
No
Comedogenic
2/5
Size
155ml / 5.24 fl oz
Type
Serum-Toner
Concerns
Hydration, Barrier
Use Time
AM & PM
Key Active
Low MW HA
Real reviews · YouTube Shorts
Why it's different

Deep Penetrating Hydration

Low molecular weight hyaluronic acid (under 500 daltons) penetrates deeper than standard HA to hydrate from within and tackle the root cause of dryness.

01

Texture & feel

SENSORY
Consistency
Foamy Bubble
Scent
Fragrance-Free
Absorption
30-60 seconds
Finish
Dewy Glass Skin

Deep Penetrating Hydration

Low molecular weight hyaluronic acid (under 500 daltons) penetrates deeper than standard HA to hydrate from within and tackle the root cause of dryness.

Barrier Strengthening

Ceramide NP, panthenol, betaine, and allantoin work together to repair and fortify your skin barrier, locking in moisture and keeping irritants out.

Nourishing Botanical Oils

Evening primrose, macadamia seed oil, and jojoba oil provide essential fatty acids that mimic skin's natural sebum for optimal oil-moisture balance.

Unique Bubble Technology

Dual-layer formula creates an airy, foamy texture upon shaking that disperses evenly for the coveted Korean glass skin effect.

02

Safety & compatibility

SAFE
Pregnancy & Breastfeeding Safe

No retinoids, salicylic acid, hydroquinone, or chemical sunscreens. All ingredients are considered safe during pregnancy and breastfeeding.

Not Fungal Acne (Malassezia) Safe

Contains macadamia seed oil and jojoba seed oil which are high in oleic acid and can feed Malassezia yeast. Avoid if you have fungal acne.

Low Comedogenic Risk

Rating 2/5. Macadamia oil (2-3) and jojoba oil (2) are generally well-tolerated but patch test if you're prone to clogged pores.

Sensitive Skin Approved

Fragrance-free, alcohol-free, and colorant-free formula specifically designed for sensitive and easily irritated skin.

Contains Tree Nut Derivative

Macadamia ternifolia seed oil is derived from macadamia nuts. Those with severe tree nut allergies should consult a dermatologist.

Compatible with Most Actives

Can be used with retinol, vitamin C, AHA/BHA, and niacinamide. Apply this serum first, then layer other treatments.

03

Ingredient breakdown

INGREDIENTS

Low Molecular Weight Hyaluronic Acid <500 DaProven

Ultra-small molecular size allows deep penetration into skin layers where standard HA cannot reach. Attracts and holds up to 1000x its weight in water for intense, lasting hydration.

  • Molecular Size: Under 500 daltons (standard HA is 1,000-1,500 kDa)
  • Penetration: Reaches deeper skin layers for internal hydration
  • Clinical Evidence: Proven to improve skin hydration and reduce fine lines
Contains both Sodium Hyaluronate and Hyaluronic Acid for multi-depth hydration

Evening Primrose Flower Extract BaseProven

Rich in gamma-linolenic acid (GLA), an omega-6 fatty acid that soothes inflammation, promotes ceramide synthesis, and supports skin barrier function.

  • Key Compound: Gamma-linolenic acid (GLA) - an essential fatty acid
  • Benefits: Anti-inflammatory, soothing, and barrier-supportive
  • Skin Types: Particularly beneficial for dry, sensitive, and aging skin

Macadamia Seed Oil EmollientProven

Rich in palmitoleic acid which closely mimics skin's natural sebum. Provides anti-aging benefits, helps with cell regeneration, and creates a protective moisture seal.

  • Key Compound: Palmitoleic acid - decreases with age in natural skin
  • Comedogenic Rating: 2-3 (low to moderate)
  • Benefits: Anti-inflammatory, anti-aging, fast absorption
Not suitable for fungal acne sufferers due to oleic acid content

Jojoba Seed Oil EmollientProven

Technically a liquid wax ester that most closely resembles human sebum. Non-comedogenic for most skin types, provides excellent moisture without clogging pores.

  • Structure: Wax ester (not a true oil) - mimics skin sebum
  • Comedogenic Rating: 2 (low)
  • Benefits: Balances oil production, anti-inflammatory, fungicidal properties
May not be suitable for fungal acne-prone skin despite its benefits

Ceramide NP BarrierProven

Essential lipid that makes up 50% of the skin barrier. Restores damaged barriers, locks in moisture, and protects against environmental irritants.

  • Function: Fills gaps in skin barrier like mortar between bricks
  • Clinical Evidence: Proven to improve barrier function and reduce TEWL
  • Best For: Dry, sensitive, eczema-prone, and aging skin

Panthenol (Pro-Vitamin B5) SoothingProven

Powerful humectant that attracts and holds water in skin. Supports wound healing, reduces inflammation, and helps form essential barrier components.

  • Comedogenic Rating: 0 (non-comedogenic)
  • Irritancy: 0 (non-irritating)
  • Benefits: Wound healing, hydration, soothing

26 ingredients

Oenothera Biennis (Evening Primrose) Flower Extract, Methylpropanediol, Butylene Glycol, Macadamia Ternifolia Seed Oil, Simmondsia Chinensis (Jojoba) Seed Oil, Dipropylene Glycol, Glycerin, Sodium Hyaluronate, Hyaluronic Acid, C12-14 Alketh-12, Neopentyl Glycol Dicaprate, Betaine, Panthenol, Xylitol, Ceramide NP, Purified Water, Allantoin, Ammonium Acryloyldimethyltaurate/VP Copolymer, Carbomer, Arginine, 1,2-Hexanediol, Caprylyl Glycol, Illicium Verum (Anise) Fruit Extract, Disodium EDTA

FREE FROM: Parabens, Silicones, Sulfates, Harsh Alcohols, Artificial Fragrance, Artificial Colorants, Common Allergens, Essential Oils, Mineral Oil, PEGs
04

Where it fits in your routine

ROUTINE
1
Cleanser
2
This Serum
3
Toner
4
Essence
5
Serum
6
Moisturizer

Use as your first step after cleansing. Can replace both toner and first essence for a simplified routine. Pro tip: Apply to damp skin for maximum hydration!

05

How to use

HOW TO USE
1

Shake Well Before Use

The dual-layer formula needs activation. Shake the bottle vigorously to create the signature bubble texture and blend the water and oil phases.

2

Dispense 2-5 Pumps

After cleansing, pump 2-5 times directly onto your face. Adjust amount based on skin type - oily skin needs less, dry skin may need more layers.

3

Pat Until Absorbed

Gently pat the foamy serum into your skin with your palms. Continue patting until fully absorbed - about 30-60 seconds. No rubbing needed!

4

Layer or Follow with Moisturizer

Apply additional layers for extra hydration, or follow with your regular serum and moisturizer. Works great alone for oily skin in humid weather.

06

Who is it for?

WHO

Perfect for you if:

  • You have "inner dry" skin (oily outside, dry inside)
  • Your skin feels tight and dehydrated after cleansing
  • You have sensitive or easily irritated skin
  • You want barrier repair and strengthening
  • You prefer fragrance-free, gentle formulas
  • You want the Korean glass skin look
  • You're pregnant or breastfeeding and need safe hydration

Consider alternatives if:

  • You have fungal acne (contains oils that feed Malassezia)
  • You have severe tree nut allergies (contains macadamia)
  • You prefer completely oil-free formulas
  • You want anti-aging actives like retinol or vitamin C
  • You need heavy acne treatment ingredients
  • You dislike products that require shaking
07

Skin type compatibility

SKIN TYPES
Oily Skin
Good

Lightweight enough for oily skin, especially in humid climates. One layer provides sufficient hydration without excess shine. Controls T-zone oiliness throughout the day.

Dry Skin
Excellent

Multiple layers deeply hydrate parched skin. The oil blend seals in moisture effectively. Follow with a rich moisturizer for best results in winter.

Combination Skin
Excellent

Perfect for "inner dry" skin that's oily on the surface but dehydrated underneath. Balances oil-moisture ratio across different face zones effectively.

Sensitive Skin
Excellent

Fragrance-free, alcohol-free formula with soothing panthenol and allantoin. Specifically designed for sensitive and reactive skin types.

Acne-Prone Skin
Moderate

Low comedogenic rating (2/5), but NOT fungal acne safe. Works well for hormonal or bacterial acne, but avoid if you have Malassezia folliculitis.

08

Results timeline

MONTH 2+
Immediately

Instant Hydration Boost

Skin feels immediately plumped, supple, and hydrated. The foamy texture creates a comfortable, non-sticky layer that absorbs within 30-60 seconds.

95% noticed instant softness
Week 1-2

Improved Skin Texture

Skin feels less tight after cleansing. Morning dryness and flakiness begin to diminish. Makeup applies more smoothly without patchy areas.

80% saw texture improvement
Week 3-4

Balanced Oil Production

T-zone oiliness decreases as skin's oil-moisture balance normalizes. Less midday shine, makeup lasts longer. Skin barrier feels stronger.

75% reported balanced skin
Month 2+

Visible Barrier Improvement

Skin is noticeably more resilient and less reactive. Fine dehydration lines appear reduced. Glass skin glow becomes more consistent and natural.

70% achieved glass skin effect
09

Ratings by platform

4K+ REVIEWS
Amazon
4.5
Rating
500+
Reviews
Main complaint: Some find it takes time to absorb initially; smaller sizes sell out quickly
Hwahae (Korea)
4.7
Rating
2,000+
Reviews
Main complaint: Price point higher than drugstore options; some separation in bottle
YesStyle
4.6
Rating
300+
Reviews
Main complaint: Shipping takes time from Korea; need to shake before every use
Brand Website
4.8
Rating
1,500+
Reviews
Main complaint: International shipping costs; wish there were travel sizes
10

Pros & cons

BALANCED

Praised

  • Deep, lasting hydration from low MW hyaluronic acid
  • Unique bubble texture feels luxurious and fun to use
  • Fragrance-free and gentle on sensitive skin
  • Effective barrier repair with ceramides and panthenol
  • Creates the coveted Korean glass skin look
  • Controls T-zone oiliness throughout the day
  • Safe for pregnancy and breastfeeding
  • Large bottle size offers good value
  • Can replace multiple steps in routine

Criticized

  • Not fungal acne safe (contains macadamia and jojoba oils)
  • Requires shaking before every use
  • Initial absorption can feel slightly oily
  • Higher price point than basic hydrating toners
  • May be too rich for very oily skin in summer
  • Contains tree nut derivative (macadamia)
  • Limited availability outside Korea and select retailers
11

Budget-friendly alternatives (dupes)

DUPES
85% Match
Hyaluronic Acid 2% + B5 Serum
$9.90
Budget Pick

Multiple molecular weights of HA with B5. Simpler formula without the oils or ceramides. Less luxurious texture but effective basic hydration at an unbeatable price.

75% Match
Hyaluronic Acid Toner Plus
$22.00
Similar Formula

5 types of hyaluronic acid with botanical extracts. Thicker ampoule-like texture. No oils, making it fungal acne safe. Great K-beauty alternative with proven hydration.

70% Match
Advanced Snail 96 Mucin Power Essence
$23.00
Cult Favorite

96% snail mucin with sodium hyaluronate. Different texture and approach to hydration. Adds skin repair and scar healing benefits not found in De:maf serum.

60% Match
Gokujyun Premium Lotion
$14.00
Budget Pick

7 types of hyaluronic acid in a watery lotion. More affordable but lacks the oils and barrier-strengthening ingredients. Best for those who want pure HA hydration.

12

Comparison with competitors

SIDE-BY-SIDE
Pycnogenol 5%
Size 30ml
Key Active Multi-MW HA 2%
Barrier Ingredients Ceramides + B5
Fungal Acne Safe Yes
Fragrance None
Texture Gel Serum
Advanced Snail 96 Mucin Power Essence
Size 100ml
Key Active 96% Snail Mucin
Barrier Ingredients Allantoin + Betaine
Fungal Acne Safe Yes
Fragrance None
Texture Viscous Essence
Hyaluronic Acid Toner Plus
Size 200ml
Key Active 5 Types HA 50%
Barrier Ingredients Panthenol + Betaine
Fungal Acne Safe Yes
Fragrance None
Texture Gel Toner
13

Storage & shelf life

12 MONTHS
Period After Opening (PAO)

12 months after opening. Mark the date you open on the bottle.

Storage

Store in a cool, dry place away from direct sunlight. Room temperature is fine; refrigeration not required but can feel refreshing.

Packaging

Plastic pump bottle with dual-layer formula. Shake well before each use to activate the bubble texture.

Travel Friendly

50ml size (1.69 fl oz) is TSA compliant. Larger sizes exceed carry-on liquid limits. Transfer to travel container if needed.

13

Frequently asked questions

FAQ

Yes, this serum is considered safe during pregnancy and breastfeeding. It contains no retinoids, salicylic acid, hydroquinone, or chemical sunscreens. All ingredients (hyaluronic acid, ceramides, plant oils, panthenol) are pregnancy-safe. However, always consult your healthcare provider before starting new skincare products during pregnancy.

No, this serum is NOT fungal acne safe. It contains macadamia seed oil and jojoba seed oil, both of which are high in oleic acid and other fatty acids that can feed Malassezia yeast. If you have fungal acne (Malassezia folliculitis), consider alternatives like Isntree Hyaluronic Acid Toner Plus or COSRX Snail Mucin Essence instead.

Yes! This serum is compatible with most active ingredients. Apply this serum first after cleansing, let it absorb, then apply your retinol, vitamin C, or acids. The hydrating and barrier-strengthening formula can actually help buffer potential irritation from strong actives. For sensitive skin, you may want to use actives and this serum on alternating nights initially.

This serum is best for dry, combination, and sensitive skin types. It's particularly excellent for "inner dry" skin that feels oily on the surface but tight and dehydrated underneath. Oily skin types can use it in one layer during humid weather. It's not ideal for those with fungal acne or severe tree nut allergies.

Immediate results: Instant hydration and plumping effect. Week 1-2: Improved texture, less tightness after cleansing. Week 3-4: Balanced oil production, better makeup application. Month 2+: Stronger skin barrier, visible glass skin glow. Most users report noticeable hydration improvement within the first week of consistent use.

Use this as your first step immediately after cleansing. It can replace both your toner and first essence for a simplified routine. Apply to damp skin for maximum hydration. Follow with additional serums (if desired) and moisturizer. Use both morning and evening for best results.

This serum has a comedogenic rating of 2 out of 5, which is considered low. Macadamia oil rates 2-3 and jojoba oil rates 2 on the comedogenic scale. Most skin types tolerate it well without breakouts. However, if you're highly acne-prone, patch test first. It is NOT suitable for fungal acne due to the oil content.

The Period After Opening (PAO) is 12 months. Once opened, use within one year for optimal freshness and efficacy. Store in a cool, dry place away from direct sunlight. The pump bottle helps minimize contamination. If you notice any change in smell, color, or texture, discontinue use.

— Skincarisma verdict
4.5 / 5 ★★★★★

Verdict: De:Maf Here-Oh My First Serum is an excellent all-in-one hydrating serum for those seeking deep, lasting moisture and barrier repair. The unique bubble texture, low molecular weight hyaluronic acid, and thoughtful blend of ceramides and botanical oils deliver impressive hydration for dry, combination, and sensitive skin types. While the premium price and fungal acne incompatibility may be drawbacks for some, the fragrance-free, pregnancy-safe formula and visible glass skin results make it a worthy investment for those who can use it. If you struggle with "inner dry" skin or a compromised barrier, this K-beauty gem deserves a spot in your routine.

Product Overview

question
lightbulb What are Quick Product Notes?

Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.

muscle Pro Tip Alert!

Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.

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Quick Product Notes

Click on icons for more information
question
lightbulb What are Notable Effects & Ingredients?

Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.

We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.

muscle Pro Tip Alert!

Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.

Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you

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Notable Effects & Ingredients

anti-aging Anti-Aging from 3 ingredient(s):
Ceramide AP Hyaluronic Acid Ceramide NP
brightening Brightening from 2 ingredient(s):
Glycerin Hyaluronic Acid
wound Promotes Wound Healing from 7 ingredient(s):
Glycerin Simmondsia Chinensis Seed Oil Sodium Hyaluronate Hyaluronic Acid Panthenol Allantoin Arginine
question
lightbulb What are Ingredients Related to Skin Type?

Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.

We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.

muscle Pro Tip Alert!

A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.

One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!

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Ingredients Related to Skin Types

Click on icons for more information
dry-skin Dry Skin
4
oily-skin Oily/Acne-Prone Skin
1
sensitive-skin Sensitive Skin
1
question
lightbulb What is the Ingredient Safety Breakdown?

Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.

muscle Pro Tip Alert!

EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.

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Ingredient Safety Breakdown

EWG Health Ratings
Low risk
Medium risk
High risk
Unknown risk
72% 28%

Product ingredient list

Showing first 5 of 25 ingredients
EWG CIR Ingredient Name & Cosmetic Functions Notes
1 Unknown
Water
Solvent, Skin Conditioning
1 Unknown
Methylpropanediol
Solvent
2 A
Glycerin
Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant, Skin Conditioning
brightening Brightening
Promotes Wound Healing
Hydrating
1 A
Butylene Glycol
Solvent, Skin Conditioning, Masking, Fragrance, Humectant, Viscosity Controlling, Viscositydecreasing Agent
Hydrating
1 Unknown
Macadamia Ternifolia Seed Oil
Emollient
VIEW ALL INGREDIENTS