PDRN for Bunny Lines: Softening the Wrinkles Across the Nose
Bunny lines are the fine, diagonal wrinkles that fan out across the upper nose and toward the inner corners of the eyes when you scrunch your nose, laugh, or squint. Named for the way rabbits wrinkle their noses, they are dynamic expression lines produced by the nasalis muscle, and for many people they are the first wrinkles to become visible at rest. They tend to become more noticeable with habitual expressions — squinting in bright light, smiling broadly, or scrunching against a strong smell — and they can be accentuated by certain cosmetic treatments elsewhere on the face that shift muscle recruitment toward the nose.
How PDRN Targets Bunny Lines
PDRN targets bunny lines by improving the strength, hydration, and elasticity of the thin skin over the nose, rather than by acting on the muscle that creates the movement. Its central mechanism is fibroblast stimulation through the adenosine A2A receptor: activated fibroblasts produce more collagen and elastin, the proteins that give skin firmness and the ability to spring back after being folded. Because bunny lines deepen from dynamic creases into permanent lines largely as this structural support declines, rebuilding it helps the skin resist etching and keeps existing lines shallower. Second, PDRN dramatically boosts hydration by stimulating hyaluronic acid production; well-hydrated skin is plumper and more supple, so fine lines across the nose look softer and the surface creases less sharply during expression. Third, PDRN improves microcirculation by promoting angiogenesis, bringing more oxygen and nutrients to an area of the face that skincare routines frequently skip — supporting overall skin health and repair right where bunny lines form. Fourth, its regenerative signalling supports healthier cell turnover and tissue quality, gradually refining the texture of the skin over the nose. Fifth, PDRN's anti-inflammatory action calms the low-grade inflammation that accelerates collagen breakdown and premature ageing. Taken together, these effects make the skin over and beside the nose firmer, more hydrated, and more elastic, so dynamic bunny lines fold less deeply and are slower to become static. PDRN works best as a preventive and skin-quality tool: it will not freeze the nasalis muscle the way botulinum toxin does, so for pronounced, deeply set bunny lines the most complete results come from combining PDRN's skin-strengthening benefits with a clinical muscle-relaxing treatment. Because PDRN is gentle and safe for the delicate skin near the eyes and nose, it can be used consistently — and consistency is exactly what builds the collagen, hydration, and elasticity that keep this central, expressive area looking smooth.
Recommended Products (4)

PDRN Hyaluronic Acid Capsule 100 Serum
Anua
Bestselling serum combining PDRN with hydrolyzed collagen and 11 types of hyaluronic acid for deeply plump, bouncy skin.
$25–30

Revive PDRN Serum
Beauty of Joseon
A traditional-medicine inspired PDRN serum from Beauty of Joseon, blending salmon PDRN with rice extract and ginseng for resilient, glowing skin.
$19–25

5 PDRN Collagen Intense Vitalizing Serum
COSRX
Multi-PDRN formula with 5 types of PDRN from salmon, centella, rice, lactobacillus, and sea grapes plus low-molecular collagen.
$30–40

DIVE-IN Low Molecular PDRN Serum
Torriden
Lightweight hydrating PDRN serum built around Torriden's signature 5D low-molecular hyaluronic acid complex for deep, layered hydration.
$22–30
Like other expression lines, bunny lines start as purely dynamic creases that appear only during movement and gradually etch into static lines visible even when the face is relaxed. This transition is driven by the slow loss of collagen and elastin in the thin skin over the nose, declining hydration, and years of repeated folding along the same lines. The skin across the bridge and sides of the nose is delicate and often overlooked in skincare routines, which lets these lines set in earlier than many people expect. Because they sit in the centre of the face, even faint bunny lines can draw attention and add a subtle look of age or tension to the expression.
PDRN (polydeoxyribonucleotide) is well suited to softening early bunny lines because it works on the skin quality that determines how deeply dynamic creases become permanent. By activating the adenosine A2A receptor, PDRN stimulates fibroblasts to rebuild collagen and elastin, boosts hyaluronic acid for hydration and plumpness, and improves microcirculation to support healthier tissue in this thin, often-neglected area. Firmer, better-hydrated, more elastic skin resists creasing and springs back more readily, so lines look shallower and take longer to etch in. While topical PDRN cannot relax the underlying muscle the way an injectable neuromodulator does, it meaningfully improves the resilience of the skin those muscles fold — making it a valuable part of a preventive, skin-quality-focused approach to bunny lines.
Frequently Asked Questions
What causes bunny lines on the nose?
Can PDRN get rid of bunny lines without Botox?
Is PDRN safe to use so close to the eyes and nose?
How long does PDRN take to improve bunny lines?
Sources
- Squadrito F, Bitto A, Irrera N, Pizzino G, Pallio G, Minutoli L, Altavilla D. “Pharmacological Activity and Clinical Use of PDRN.” Current Pharmaceutical Design 23(27): 3948-3957 (2017). doi:10.2174/1381612823666170516153716
- Colangelo MT, Galli C, Giannelli M. “Polydeoxyribonucleotide: A Promising Biological Platform for Dermal Regeneration.” Current Pharmaceutical Design 26(17): 2049-2056 (2020). doi:10.2174/1381612826666200116150912
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