Phosphor Bronze · Guitar Strings
DR Dragon Skin+ Acoustic Guitar Strings
Lower PFAS concern; acoustic strings are not a typical PFAS vector, but brand transparency is absent.
DR Strings' Dragon Skin+ acoustic guitar strings use phosphor bronze and steel construction, materials with no known PFAS risk profiles in this application. Acoustic guitar strings are not treated with water-repellent, stain-resistant, or non-stick coatings that commonly harbor PFAS.
Shop Phosphor Bronze on Amazon →Material
Phosphor bronze wound steel strings
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
other is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
DR Dragon Skin+ strings use phosphor bronze wound around a steel core, a standard construction for acoustic guitars. Phosphor bronze is a copper-tin-phosphorus alloy chosen for acoustic tone and corrosion resistance. The steel core provides structural tension. Neither material releases harmful substances during normal playing or storage at room temperature.
The brand's record and disclosure
Phosphor Bronze (DR Strings parent company) does not publish detailed chemical safety disclosures, material safety data sheets for end consumers, or third-party certifications for heavy metal content in strings. No recalls or safety incidents involving DR acoustic strings are on record. The brand's silence on PFAS and manufacturing transparency is typical of the guitar string industry but limits independent verification.
How it compares in its category
Phosphor bronze strings are a mainstream choice alongside 80/20 bronze and pure nickel alternatives. All three are low-risk for direct user exposure because they do not leach into food or skin during playing. Coated variants (like Dragon Skin+) add a protective polymer layer that extends lifespan; this coating's composition is not publicly disclosed but typical acrylic or urethane coatings are stable when dry.
If you buy it
Store strings in a cool, dry place to slow corrosion and preserve the coating. Wash hands after playing to remove any residual bronze dust or oils, especially before eating. Replace strings every 3-6 months depending on play frequency and sound quality loss. Do not ingest or expose to prolonged moisture, which may degrade the coating and expose the core.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Heavy metals in bronze alloy (copper, tin, trace lead or cadmium)
Phosphor bronze wire is not known to leach Cu, Sn, or contaminants into skin or digestive tract during normal playing. Coating protects core. No published analysis of Dragon Skin+ strings for heavy metal content exists.
Polymer coating degradation and particulate release
The Dragon Skin+ polymer coating is not chemically characterized by the brand. If coating degrades from humidity or age, small particles may shed; inhalation risk during playing is negligible but ingestion risk if coating flakes contaminate food or water is theoretical.
Formaldehyde or volatile organic compounds in coating
No evidence that DR Dragon Skin+ uses formaldehyde-releasing resins or solvent-based coatings. Modern string coatings are typically UV-cured acrylics or low-VOC urethanes, but brand does not disclose this.
Bacterial or fungal growth on stored strings
Moisture trapped under or between stored strings can promote microbial growth, particularly if packaged strings are not kept dry. This is a storage issue, not a manufacturing one, and easily prevented by proper storage.
Nickel sensitization from steel core contact
Steel core in acoustic strings typically contains minimal nickel unless explicitly plated. No reports of nickel allergy reactions from DR acoustic strings. Direct prolonged skin contact during playing is brief and unlikely to trigger sensitization in non-allergic users.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 78% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Guitar Strings
Martin
Retro Acoustic Guitar Strings
Phosphor bronze, stainless steel, nylon wound
Lower concern, acoustic guitar strings typically use established metals and nylon without water-repellent coating or nonstick coatings.
✓Bare metal or glass, no coating at all
Acoustic360
Ernie Ball Everlast Acoustic Guitar Strings
Phosphor bronze/stainless steel wound on steel core
Lower PFAS concern, acoustic guitar strings use standard metal materials with no known fluorochemical treatments.
✓Bare metal or glass, no coating at all
Dean Markley
Electric Guitar Strings
Steel alloy strings (nickel-plated or stainless steel core)
Lower PFAS concern, steel strings lack typical PFAS applications, but no brand disclosure exists.
✓Bare metal or glass, no coating at all
More guitar strings grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.