
Highlights
WHAT IS IT?
Lightweight hydrating serum with 11 ingredients
FEATURES
Pre-moisturizing boost, adds an extra light layer hydration to skin
BEST FOR
All skin types
CHECKS
Free of parabens, colorants, fragrance
Who Is It For?
Adults Both Women And MenWhat Does It Help With?
Hydration Softness RadianceBudget
Mid-rangeHow To Use
Which routine should it be used in?
Instructions:
Key Information
What DHC Says
Product Description:
Give your skin a pre-moisturizing boost with this lightweight, shimmering serum infused with our signature 100% organic olive oil sourced from Spain. When applied before your moisturizer, this fast-absorbing formula adds an extra light layer hydration to skin. Just a few drops of our signature 100% organic olive oil add a beautiful brilliance. Sourced in Spain and ultra-purified in Japan, this exceptionally pure olive oil produces the ultimate in hydration for soft, radiant skin. Crystal Skin Essence is the perfect pre-moisturizing boost for all skin types.
About the Brand:
Ingredients Overview
Ingredients List
water/aqua/eau, butylene glycol, olea europaea (olive) fruit oil, pentylene glycol, xanthan gum, magnesium sulfate, sodium citrate, gellan gum, citric acid, tocopherol, phenoxyethanol
Key Ingredients
Organic Olive Oil
Ingredients Details
Butylene Glycol
Common Name(s): 1,3-butanediol,bg,1,3-butylene glycol
CAS Number: 107-88-0
DESCRIPTION
What It Does: Provides humectant hydration and active ingredient solubilization with excellent skin feel.
Why It's Used: Preferred glycol humectant in premium and k-beauty formulations for superior skin feel vs propylene glycol with equivalent functionality.
How It Works: Two hydroxyl groups at 1,3-positions provide water binding and solvent activity. better tolerated than propylene glycol with minimal sensitization risk. 4-carbon backbone provides slightly greater hydrophobic character enabling dissolution of less polar actives vs pg.
Typically Found In: Toners,essences,serums,k-beauty formulas
TECHNICAL DETAILS
Primary Category: Functional ingredient โ glycol humectant
Secondary Functions: Tewl reduction,skin plumping
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ10%
SOURCING & ETHICS
Vegan Status: Yes โ synthetic
Halal Status: Yes
Source Notes: Synthetic or naturally derived. excellent aqueous solubility.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Non-irritating; suitable for all skin types.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Ceramides,emollients,occlusives,glycerin,hyaluronic acid
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
K-beauty's preference for butylene glycol over propylene glycol is driven by two factors: bg's superior skin feel (less tacky than pg's higher viscosity) and its lower sensitization potential (1,3-bg has better spatial distribution of hydroxyl groups that reduces protein interaction vs pg's 1,2-position oh groups).
Last Verified: Cosing database,cir safety assessment
Primary Sources: 2026-03-12
Citric Acid
Common Name(s): Lemon acid,2-hydroxypropane-1,2,3-tricarboxylic acid
CAS Number: 77-92-9
DESCRIPTION
What It Does: Adjusts ph to optimal ranges, chelates destabilizing metal ions, provides mild exfoliation at higher concentrations.
Why It's Used: Universal cosmetic ph adjuster and chelating agent. aha exfoliant activity is secondary.
How It Works: As ph adjuster, donates protons. as chelating agent, three carboxylic groups bind divalent metals (caยฒโบ, mgยฒโบ, feยฒโบ) preventing oxidative degradation.
Typically Found In: Nearly all cosmetic formulations,brightening products,exfoliants
TECHNICAL DETAILS
Primary Category: Active ingredient โ alpha hydroxy acid (aha)
Secondary Functions: Chelating agent,ph adjustment,preservation enhancement
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.1%โ10%
SOURCING & ETHICS
Vegan Status: Yes โ synthetic or fermentation-derived
Halal Status: Yes
Source Notes: Produced by fermentation of sugars by aspergillus niger. gras (e330). most abundant organic acid in citrus.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low at low concentrations; 2/5 at exfoliant concentrations
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Photosensitizing โ mandatory spf use. start at low frequency.
Safe for Sensitive Skin: Use with caution โ spf required
SAFETY & COMPATIBILITY
Safety Profile: Safe at otc concentrations. eu: โค10% leave-on at ph โฅ3.5. mandatory spf advisory.
Works Well With: Niacinamide,ceramides,hyaluronic acid,spf
Avoid Combining With: Retinol in same step; multiple exfoliants simultaneously
SCIENTIFIC NOTE
Three carboxylic acid groups provide multiple proton donation sites and stronger chelation than monocarboxylic ahas. this makes citric acid the preferred cosmetic chelating agent alongside edta.
Last Verified: Cosing database,cir safety assessment,ewg skin deep
Primary Sources: 2026-03-12
Gellan Gum
Common Name(s): Kelcogel,sphingomonas elodea gum
CAS Number: 71010-52-1
DESCRIPTION
What It Does: Provides firm, clear, thermally stable gels at low concentrations for rigid gel cosmetic formulations.
Why It's Used: Premium gellant for rigid-texture gel products requiring thermal stability above standard carrageenan or agar gels.
How It Works: Tetrasaccharide repeat (glucuronate-glucose-rhamnose-glucose) forms double helices cross-linked by mono/divalent cations. low-acyl gellan forms firm, brittle gels. high-acyl forms soft, elastic gels. thermal stability to 65ยฐc (low-acyl).
Typically Found In: Luxury gel serums,stabilizing gels,suspended particle systems
TECHNICAL DETAILS
Primary Category: Functional ingredient โ microbial polysaccharide gellant
Secondary Functions: Tewl reduction,skin plumping
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.05%โ0.5%
SOURCING & ETHICS
Vegan Status: Yes โ microbial fermentation
Halal Status: Yes
Source Notes: Synthetic or naturally derived. excellent aqueous solubility.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Non-irritating; suitable for all skin types.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Ceramides,emollients,occlusives,glycerin,hyaluronic acid
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Gellan gum's ion-responsive gellation provides a unique 'smart delivery' opportunity: when low-acyl gellan at sub-gelling salt concentration is applied to skin, the sodium and calcium ions in natural skin sweat and surface electrolytes trigger in-situ gelation on the skin surface. this self-gelling property enables liquid-to-gel texture transformation on skin contact.
Last Verified: Cosing database,cp kelco gellan gum technical data,cir safety assessment
Primary Sources: 2026-03-12
Magnesium Sulfate
Common Name(s): Mineral salt,ionic strength modifier,skin mineralising agent
CAS Number: N/a
DESCRIPTION
What It Does: Provides mineral ion delivery to skin, modulates formulation ionic strength for viscosity and stability optimisation, and supports skin enzyme activity through essential mineral cofactor supplementation.
Why It's Used: Mineral salts are essential formulation ph and ionic strength adjusters โ magnesium sulfate specifically provides the mgยฒโบ ions that activate transglutaminase crosslinking during sc cornification, supporting barrier formation.
How It Works: Ionic dissociation in aqueous formulation provides free ions that modulate polymer viscosity (ionic strength reduces charge-based thickener swelling), provide mineral nutrition to skin enzymes (caยฒโบ for transglutaminase, mgยฒโบ for mgatp phosphotransferases), and adjust osmolality for skin-surface tonicity matching.
Typically Found In: All formulations,mineral skin care
TECHNICAL DETAILS
Primary Category: Active ingredient โ mineral / metal active
Secondary Functions: Antimicrobial,sebum regulation,antioxidant enzyme cofactor
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.01%โ5%
SOURCING & ETHICS
Vegan Status: Yes โ mineral
Halal Status: Yes
Source Notes: Mineral/inorganic compound. cosmetic or pharmaceutical grade.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Non-irritating at recommended concentrations.
Safe for Sensitive Skin: Yes at recommended concentrations
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile at cosmetic concentrations. ewg score: 1โ2.
Works Well With: Niacinamide,salicylic acid,other actives
Avoid Combining With: No significant incompatibilities at standard concentrations
SCIENTIFIC NOTE
Mgยฒโบ and caยฒโบ are essential cofactors for the sc cornification process โ caยฒโบ specifically drives the caยฒโบ gradient across the epidermis (high in outer sc, low in basal layer) that regulates keratinocyte differentiation through caยฒโบ-calmodulin signalling.
Last Verified: Cosing database,magnesium sulfate mineral salt formulation review
Primary Sources: 2026-03-12