Celestine Hydra-Plumping Peptide Serum

Earth Harbor

Where to buy Possibly in stock

About this product

The Earth Harbor Celestine Hydra-Plumping Peptide Serum is a serums, essence, ampoule. Our analysis of its 13 ingredients (10 low-risk) rates it Excellent (97/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
13
Low-risk
10
Fragrance
Fragrance-free
Origin
United States
Data updated
May 2026

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe Minimal Ingredients

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 4/4
Good for dry skin
Punica Granatum Seed Oil Sodium Hyaluronate Glycerin Hydrolyzed Caesalpinia Spinosa Gum
Caution for dry skin
Xanthan Gum Glycerin Hydrolyzed Caesalpinia Spinosa Gum Alcohol Denat.
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Alcohol Denat.
Sensitive Skin 3/5
Good for sensitive skin
Laminaria Japonica Extract Glycerin Aloe Barbadensis Leaf Juice
Caution for sensitive skin
Laminaria Japonica Extract Punica Granatum Fruit Juice Glycerin Lemon Myrtle Oil Alcohol Denat.

Ingredients list

13 total
Lower hazard (1) Higher hazard (4)
All13 Skin Conditioning11 Viscosity Controlling3 Skin Protecting3 Humectant3 Hair Conditioning3 Fragrance3 Masking3 Emollient2
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Punica Granatum Fruit Juice
(Masking, Skin Conditioning)
B
Aloe Barbadensis Leaf Juice
(Skin Conditioning)
Good for Sensitive Skin
Good for Sensitive Skin
1
A
Punica Granatum Seed Oil
(Emollient)
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
4
Alcohol Denat.
(Antifoaming Agent, Antimicrobial, Astringent, Masking, Solvent, Viscosity Controlling)
Bad for Dry Skin
Bad for Dry Skin
Bad for Sensitive Skin
Bad for Sensitive Skin
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
A
Hydrolyzed Caesalpinia Spinosa Gum
(Absorbent, Emollient, Hair Conditioning, Skin Conditioning)
1
A
Caesalpinia Spinosa Gum
(Adhesive, Skin Conditioning, Viscosity Increasing Agent, Film Forming, Viscosity Controlling)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
1
Laminaria Japonica Extract
(Fragrance, Skin Protecting)
1
Lemon Myrtle Oil
(Flavoring Agent, Fragrance, Pesticide, Masking)
Chrysanthemum Morifolium Flower Oil
(Skin Conditioning, Skin Protecting)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

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No close formula match yet — browse other products like this

Key ingredients

Niacinamide
Strengthens, smooths, and brightens skin.
Hyaluronic Acid
Hydrates by attracting and holding water.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Reduces IrritationEases discomfort and supports skin resilience.
Redness ReducingSoothes visible redness and calms irritation.
Barrier RepairStrengthen and restore your skin's natural barrier.
Anti-AgingSoftens lines and helps skin look youthful.
Scar HealingImproves the look of marks and scars.
Acne FightingFights acne and helps prevent breakouts.
BrighteningRestores radiance to dull, tired skin.

Concerns

Not fungal acne (malassezia) safe
May not suit sensitive skin

Ingredients explained

Punica Granatum Fruit Juice
Masking, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 MaskingSkin conditioning
Punica Granatum Seed Oil
Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emollient
Hydrolyzed Caesalpinia Spinosa Gum
Absorbent, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AbsorbentEmollientHair conditioningSkin conditioning
Caesalpinia Spinosa Gum
Adhesive, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AdhesiveSkin conditioningViscosity increasing agentFilm formingViscosity controlling
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
Laminaria Japonica Extract
Fragrance, Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 FragranceSkin protecting
Lemon Myrtle Oil
Flavoring agent, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 Flavoring agentFragrancePesticideMasking
Chrysanthemum Morifolium Flower Oil
Skin conditioning, Skin protecting
Limited public safety data.Read moreShow less
EWG N/A Skin conditioningSkin protecting
Xanthan Gum
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingSkin conditioningSurfactant -emulsifying agentViscosity increasing agentBindingGel formingViscosity controlling
Aloe Barbadensis Leaf Juice
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A CIR B Skin conditioning Good for Sensitive Skin
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Alcohol Denat.
Antifoaming agent, Antimicrobial
Causes moisture evaporation - prone to dry out skinRead moreShow less
EWG 4 Antifoaming agentAntimicrobialAstringentMaskingSolventViscosity controlling Bad for Dry SkinBad for Sensitive Skin
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Morning & evening: Suitable for both AM and PM use.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

Niacinamide 2–5% (up to 10%)

Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.

Niacinamide

INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.

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