Ingredient review
Dimorpholinopyridazinone
INCI: DIMORPHOLINOPYRIDAZINONE
A synthetic UV filter that provides broad-spectrum sun protection with low irritation potential, but its use is limited to certain regions.
In plain English
Dimorpholinopyridazinone is a man-made ingredient used in sunscreens to absorb UV rays before they can damage your skin. Think of it as a microscopic sponge that soaks up the sun's energy and turns it into harmless heat. It's designed to be gentle on skin and is often combined with other sun filters for broader protection.
Review score
Safety, usefulness, and evidence
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
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Dimorpholinopyridazinone 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.
- Step 1Start with the score, then check the irritation and clogging risk before judging Dimorpholinopyridazinone.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- 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
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A synthetic organic compound that functions as a UV filter in cosmetic sunscreens. It absorbs UV radiation, particularly in the UVA and UVB range, and converts it into heat, which is then released from the skin.
How it works
When applied to the skin, dimorpholinopyridazinone molecules absorb high-energy UV photons. This absorption causes the molecule to enter an excited state, and it then releases the energy as lower-energy heat, preventing the UV rays from reaching and damaging skin cells.
Pros
Gentle on skin
Dimorpholinopyridazinone has a low irritation and allergy risk, making it suitable for sensitive skin types.
Broad-spectrum protection
It absorbs both UVA and UVB rays, helping prevent sunburn and long-term skin damage like premature aging.
Cons and cautions
Limited global approval
This ingredient is not approved in all markets (e.g., the US), so you may not find it in products sold there.
Potential white cast
If not formulated with micronized particles or combined with other filters, it can leave a visible white residue on darker skin tones.
Best for
- People looking for a gentle, broad-spectrum sunscreen ingredient
- Those with sensitive skin who react to older chemical filters
Use caution if
- Anyone seeking a sunscreen ingredient approved by the FDA in the US (check local regulations)
Usage tips
Safety summary
Dimorpholinopyridazinone is considered safe for use in cosmetics at typical concentrations, with low irritation and sensitization potential. Long-term human data are limited, but animal studies and short-term human trials support its safety profile.
Research notes
Research indicates effective UV absorption and photostability. Most studies are from manufacturer-sponsored trials or regulatory dossiers. Independent peer-reviewed data are still emerging.
Common label clues
- Typical concentration
- Typically 1–5% in sunscreen formulations
- Regulatory status
- Approved as a UV filter in the EU and some other regions, but not yet listed as a permitted sunscreen ingredient by the US FDA. Always check local regulations.
- Common uses
- Sunscreens, Daily moisturizers with SPF, Anti-aging products
- Environmental note
- Synthetic UV filters may accumulate in water systems; however, dimorpholinopyridazinone is not currently flagged as a major environmental concern.
Good to know
- Often combined with other UV filters like avobenzone or octocrylene for enhanced stability and protection.
- Check the product label for 'broad spectrum' to ensure UVA and UVB coverage.
Common questions
What is Dimorpholinopyridazinone in beauty products?
Dimorpholinopyridazinone is a man-made ingredient used in sunscreens to absorb UV rays before they can damage your skin. Think of it as a microscopic sponge that soaks up the sun's energy and turns it into harmless heat. It's designed to be gentle on skin and is often combined with other sun filters for broader protection.
What does Dimorpholinopyridazinone do in a beauty product?
When applied to the skin, dimorpholinopyridazinone molecules absorb high-energy UV photons. This absorption causes the molecule to enter an excited state, and it then releases the energy as lower-energy heat, preventing the UV rays from reaching and damaging skin cells.
Is Dimorpholinopyridazinone safe for most people?
Dimorpholinopyridazinone is considered safe for use in cosmetics at typical concentrations, with low irritation and sensitization potential. Long-term human data are limited, but animal studies and short-term human trials support its safety profile.
Who should be careful with Dimorpholinopyridazinone?
Anyone seeking a sunscreen ingredient approved by the FDA in the US (check local regulations)
Research sources
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.