Ingredient review

Hydrogenated Shark Liver Oil

INCI: HYDROGENATED SHARK LIVER OIL

A rich emollient that softens skin, but its shark-derived origin raises ethical and sustainability concerns.

beautyskincareemollient

In plain English

Hydrogenated shark liver oil is a thick, waxy oil that comes from shark livers. In skincare, it acts like a gentle barrier that helps keep moisture in and makes skin feel smooth. It's similar to squalane, which is often made from olives or sugarcane today. Because it comes from sharks, many brands now avoid it for ethical reasons.

Review score

Safety, usefulness, and evidence

3.5Good
3.5/ 5

Potentially useful with some tradeoffs

The evidence base is useful, but some claims depend heavily on the formula.

Risk flags are low for most users, though the finished product can still irritate.

Source
natural
Evidence
moderate
Irritation
low
Clogging risk
low
How reviews are scored

Quick decision guide

Useful, but context matters

Hydrogenated Shark Liver Oil is generally a lower-concern ingredient when the full formula suits your skin.

Plain-English read

Treat this as a practical screening step before you compare products that contain this ingredient.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Hydrogenated Shark Liver Oil.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.

Score terms in plain English

Irritation risk

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

moderate

There is useful support, but formula details and claim strength still matter.

What it is

A hydrogenated (hardened) oil extracted from the liver of deep-sea sharks, primarily the dogfish or basking shark. It is rich in squalene (which is then hydrogenated to squalane) and other fatty acids.

How it works

It forms a thin, non-greasy film on the skin's surface that slows water loss (transepidermal water loss, or TEWL), helping the skin stay hydrated. It also fills in rough patches, making skin feel softer and smoother.

Pros

Excellent moisturizer

Helps lock in hydration and prevents moisture loss, making it ideal for dry or compromised skin.

Very low irritation risk

Rarely causes allergic reactions or breakouts, suitable for sensitive skin.

Cons and cautions

Ethical sourcing concerns

Derived from sharks, which are often overfished, raising sustainability and animal welfare issues.

Not vegan-friendly

Animal-derived ingredient, so it doesn't fit vegan or many cruelty-free routines.

Best for

  • People with dry or dehydrated skin
  • Those looking for a gentle, non-irritating moisturizer

Use caution if

  • Vegans and those seeking cruelty-free products
  • Environmentally conscious consumers concerned about shark conservation

Usage tips

Use in your moisturizer or night cream for extra hydration.
Layer over a water-based serum to seal in active ingredients.
Patch test first if you have very sensitive skin, though reactions are rare.

Safety summary

Considered safe for topical use with very low irritation and comedogenic potential. The main concerns are ethical and environmental rather than safety.

Research notes

Studies confirm its effectiveness as an emollient and moisturizer, but most research focuses on squalane (the hydrogenated form) rather than the raw oil. Evidence is moderate and largely based on traditional use.

Common label clues

Typical concentration
1–10% in leave-on products
Regulatory status
Approved for cosmetic use in most countries, including the US and EU, with no specific restrictions beyond general cosmetic safety requirements.
Common uses
Moisturizers, Lip balms, Eye creams, Anti-aging products
Environmental note
Shark liver oil harvesting can contribute to overfishing of vulnerable shark species. Plant-derived squalane is a more sustainable alternative.

Good to know

  • Hydrogenated shark liver oil is chemically similar to squalane, but squalane is now commonly made from olives or sugarcane.
  • Many brands have phased out shark-derived oils in favor of plant-based alternatives.

Common questions

What is Hydrogenated Shark Liver Oil in beauty products?

Hydrogenated shark liver oil is a thick, waxy oil that comes from shark livers. In skincare, it acts like a gentle barrier that helps keep moisture in and makes skin feel smooth. It's similar to squalane, which is often made from olives or sugarcane today. Because it comes from sharks, many brands now avoid it for ethical reasons.

What does Hydrogenated Shark Liver Oil do in a beauty product?

It forms a thin, non-greasy film on the skin's surface that slows water loss (transepidermal water loss, or TEWL), helping the skin stay hydrated. It also fills in rough patches, making skin feel softer and smoother.

Is Hydrogenated Shark Liver Oil safe for most people?

Considered safe for topical use with very low irritation and comedogenic potential. The main concerns are ethical and environmental rather than safety.

Who should be careful with Hydrogenated Shark Liver Oil?

Vegans and those seeking cruelty-free products Environmentally conscious consumers concerned about shark conservation

Research sources

Cosmetic Ingredient Review (CIR) – Safety Assessment of SqualaneOpenPubMed – Squalane in dermatologyOpenEnvironmental Working Group (EWG) – Shark liver oilOpen

Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.