No known benefits

Polyperfluoroperhydrophenanthrene at a glance

  • Fluorocarbon made up of fluorine and carbon
  • Mostly used in ingredient blends
  • Utilized as a solvent
  • More research is needed to determine its safety

Polyperfluoroperhydrophenanthrene description

Perfluoroperhydrophenanthrene (PFHP) is a cosmetics ingredient and fluorocarbon, or a chemical compound made up of fluorine and carbon. It’s most used within blends comprised of other fluorocarbons, particularly perfluorodecalin, where it’s touted as a solvent. Solvents are ingredients that are used to help dissolve or break down other ingredients to form a solution. As with most groups of chemicals, there are good and bad solvents. There are conflicting reports that PFHP belongs to a group of ingredients known as PFAS (per- and polyfluoroalkyl substances). The United States Food and Drug Administration is monitoring PFAS for potential environmental and health implications. Currently, more data is needed to come to any conclusions regarding the impacts of PFAS. Despite this, these types of solvents are capable of releasing extra oxygen, posing a risk of damaging skin by generating harmful molecules known as free radicals. As such, it’s best to seek cosmetic products that use solvents that are proven to be safe.

Polyperfluoroperhydrophenanthrene references

  • PubChem, Accessed May 2023, Webpage
  • United States Environmental Protection Agency, Accessed May 2023, Webpage

Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region.

Ingredient ratings


Proven and supported by independent studies. Outstanding active ingredient for most skin types or concerns.


Necessary to improve a formula's texture, stability, or penetration.


Generally non-irritating but may have aesthetic, stability, or other issues that limit its usefulness.


There is a likelihood of irritation. Risk increases when combined with other problematic ingredients.


May cause irritation, inflammation, dryness, etc. May offer benefit in some capability but overall, proven to do more harm than good.


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Not rated

We have not yet rated this ingredient because we have not had a chance to review the research on it.