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Ceramides

Ceramide NP, AP, EOP, etc.

What It Is

Lipids that are naturally found in the skin and are crucial for barrier function and hydration. They make up about 50% of the skin's outer layer and help prevent moisture loss.

Key Functions

  • Restores skin barrier function
  • Prevents moisture loss
  • Protects against environmental damage
  • Improves skin resilience

Quick Facts

Type:

Emollient

Category:

Barrier Support

Best For:
All skin typesDry skinSensitive skinEczema-prone skinMature skin
Avoid Mixing With:
None - universally compatible

Safety Profile:

General Safety:

Excellent safety profile

Pregnancy Safety:

Safe during pregnancy and breastfeeding

Sensitivity Risk:

Very low risk of sensitivity

Ingredient Penetration Depths

Understanding how deep skincare ingredients can reach

Stratum Corneum

Outermost protective layer

Depth: 0.01-0.02mm

High MW Hyaluronic Acid

Molecular Size: 1,000-1,800 kDa

Mineral Sunscreens

Molecular Size: Particulate

Silicones

Molecular Size: Film-forming

Ceramides

Molecular Size: 500-1,000 Da

Epidermis

Living skin cells, no blood vessels

Depth: 0.05-0.1mm

Medium MW Hyaluronic Acid

Molecular Size: 100-1,000 kDa

Niacinamide

Molecular Size: 122 Da

Vitamin C Derivatives

Molecular Size: 200-500 Da

AHAs (Glycolic Acid)

Molecular Size: 76 Da

Dermis

Collagen, elastin, blood vessels

Depth: 0.5-3mm

Low MW Hyaluronic Acid

Molecular Size: 10-100 kDa

Retinol

Molecular Size: 286 Da

Peptides

Molecular Size: 500-1,500 Da

L-Ascorbic Acid

Molecular Size: 176 Da

Factors Affecting Penetration

Molecular Weight

Smaller molecules (under 500 Da) penetrate deeper. The 500 Da rule states that molecules larger than this rarely penetrate beyond the stratum corneum.

Formulation

Delivery systems like liposomes, nanoparticles, and certain solvents can help larger molecules penetrate deeper into skin layers.

Skin Condition

Damaged or compromised skin barriers allow deeper penetration, while intact barriers are more selective about what passes through.

Powerful Combinations

Vitamin C + Ceramides

Vitamin C + Ceramides: High-Compatibility Pair

Vitamin C and Ceramides can be combined in most routines for users targeting dullness and dark spots and barrier recovery. These ingredients are generally complementary and can be layered with a standard routine.

Retinol + Ceramides

Retinol + Ceramides: High-Compatibility Pair

Retinol and Ceramides can be combined in most routines for users targeting fine lines and texture and barrier recovery. These ingredients are generally complementary and can be layered with a standard routine.

Niacinamide + Ceramides

Niacinamide + Ceramides: High-Compatibility Pair

Niacinamide and Ceramides can be combined in most routines for users targeting oil balance and pores and barrier recovery. These ingredients are generally complementary and can be layered with a standard routine.

Hyaluronic Acid + Ceramides

Hyaluronic Acid + Ceramides: High-Compatibility Pair

Hyaluronic Acid and Ceramides can be combined in most routines for users targeting dehydration and barrier recovery. Hyaluronic Acid hydrates while Ceramides reduce water loss and reinforce barrier lipids.

Ceramides + Salicylic Acid

Ceramides + Salicylic Acid: High-Compatibility Pair

Ceramides and Salicylic Acid can be combined in most routines for users targeting barrier recovery and congestion and breakouts. These ingredients are generally complementary and can be layered with a standard routine.

Ceramides + Glycolic Acid

Ceramides + Glycolic Acid: High-Compatibility Pair

Ceramides and Glycolic Acid can be combined in most routines for users targeting barrier recovery and dull, rough texture. These ingredients are generally complementary and can be layered with a standard routine.

Safety Profile

General Safety

Excellent safety profile

Pregnancy Safety:

Safe during pregnancy and breastfeeding

Sensitivity Risk:

Very low risk of sensitivity

Frequently Asked Questions

Is Ceramides safe for all skin types?

Ceramides is generally excellent safety profile. It's particularly suitable for all skin types, dry skin, sensitive skin, eczema-prone skin, mature skin.

Will Ceramides make my skin feel greasy?

Ceramides is an emollient that softens and smooths the skin by filling in gaps between skin cells. The texture and feel depend on the specific formulation, but it's designed to absorb well without excessive greasiness.

Is Ceramides comedogenic?

Ceramides has a moderate risk of clogging pores. It's particularly suitable for all skin types, dry skin, sensitive skin, eczema-prone skin, mature skin.