Product Roundups
13 min read
Best Serums for a Sagging Jawline and Neck (2026): Morning and Night Picks
Nine serums for a sagging-looking jawline and neck, split into morning peptide and hydrating picks and night Retinoid picks, compared label by label for 2026.
Key Takeaways
Split the neck routine by time of day. Peptides and humectants suit the morning, and a Retinoid suits the night, used slowly on skin that’s often thinner than the face.
Nécessaire The Neck Serum leads the morning group: a peptide serum built for the neck and labeled fragrance-free. For the night, La Roche-Posay Retinol B3 Pure Retinol Serum names the neck in its directions.
At #3 sits U Beauty’s treatment for chest, neck, and jaw as one area, The SCULPT Neck + Décolleté Concentrate, used both morning and night.
A serum works on the skin. It can help the neck and jawline look smoother, more hydrated, and visibly firmer, but it doesn’t move the deeper structures that shape a jawline.
A softer-looking jawline and a crepey-looking neck often turn up together, and most people try to fix both with whatever they already use on their face. That can work, but the neck has a few differences worth planning around: it’s easy to skip with sunscreen, and the skin between jaw and collarbone can be more delicate than the cheeks.
This guide splits nine serums into a morning group and a night group. Pick one from each, and you have a neck routine that covers peptides, hydration, and a Retinoid without stacking everything at once.
What Changes Along the Jawline and Neck
Cleveland Clinic’s aging-skin explainer says that when skin loses its elasticity, gravity can cause “looseness and fullness under the cheeks and jaw (jowls and “double chin”).” Some of that is in the skin, and some of it isn’t.
The part a serum can reach is the skin, and sun exposure is one part of that you can act on. Writing in the Annals of Dermatology in 2026, reviewers call topical Retinoids first-line for photoaging and describe a four-year Australian trial of 903 adults in which regular sunscreen use was linked to 24% less skin aging.
The skin below the jaw also asks for a gentler hand. A 2024 review of chest skin notes that the chest’s dermal and epidermal layers are thinner than the face’s, with fewer oil glands, which is one reason to introduce a Retinoid on the neck and chest more slowly than on the face.
Morning or Night: What Each Serum Is For
Morning, peptides: Peptides turn up in many neck formulas aimed at visible firmness and the look of fine lines. A meta-analysis of peptide studies published in 2026 reported modest effects, mostly driven by oral peptides, with only two topical trials included, so treat them as a steady, gentle step rather than a dramatic one.
Morning, humectants: Hyaluronic Acid draws water into the skin’s outer layers. A 2022 review describes it as a humectant, and visibly hydrated skin can soften the look of neck lines.
Night, a Retinoid: The AAD advises using Retinoids at night, beginning with the gentlest formula on alternate nights and building up slowly.
Every morning, sunscreen: apply it to the neck and the underside of the jaw, not just the face.
At a Glance
Pick one from each group:
Morning
Nécessaire The Neck Serum: best morning peptide serum made for the neck
Paula’s Choice Pro-Collagen Multi-Peptide Booster: best peptide booster to mix into a moisturizer
U Beauty The SCULPT Neck + Décolleté Concentrate: best chest-to-jaw treatment for morning and night
Naturium Multi-Peptide Advanced Serum: best budget peptide serum that covers face, neck, and chest
Vichy Minéral 89 Hydrating & Plumping Daily Booster: best humectant base layer
Night
La Roche-Posay Retinol B3 Pure Retinol Serum: best night Retinol with neck directions
Olay Retinol 24 Night Smoothing Serum: best drugstore night Retinoid serum
ALASTIN Restorative Skin Complex with TriHex+: best Retinoid-free night splurge
Geek & Gorgeous Power Peptides: best low-cost serum for nights off a Retinoid
How We Compared These Products
No serum here was tried on skin for this guide. In October 2026 we went through the brand pages and ingredient lists, comparing five things:
Time of day: whether the brand directs it to the morning, the night, or both.
The neck in the directions: whether the brand names the neck, chest, or jawline.
Main ingredients: peptides, humectants, or a Retinoid, and their place in the INCI.
Fragrance: read off the INCI, or the brand’s label where no list is shown.
Price and size, as listed.
Neck and Jawline Serums Compared
Serum | What it’s built on | Price | Fragrance | When |
|---|---|---|---|---|
Nécessaire The Neck Serum | Five named peptides at 7.5% total, plus Niacinamide | $65 for 50 ml | Fragrance-free (brand) | Morning |
Paula’s Choice Pro-Collagen Multi-Peptide Booster | Six peptides | $59 for 0.67 fl oz | No added fragrance (brand) | Morning |
The SCULPT Neck + Décolleté Concentrate (U Beauty) | Ectoin, Acetyl Hexapeptide-8, Ceramide NP, Hyaluronic Acid | $138 for 50 ml | Fragrance ingredient listed | Morning and night |
Naturium Multi-Peptide Advanced Serum | Acetyl Hexapeptide-8, a copper peptide, Squalane | $25 for 1.0 fl oz | No fragrance entry | Morning |
Vichy Minéral 89 | Hyaluronic Acid, Polyglutamic Acid | Varies by retailer | Fragrance-free | Morning, first layer |
La Roche-Posay Retinol B3 Pure Retinol Serum | Niacinamide plus Retinol and Retinyl Palmitate | $44.99 | Parfum listed | Night |
Olay Retinol 24 Night Smoothing Serum | Retinol, Retinyl Propionate, Niacinamide | $39.99 for 1.3 oz | Fragrance and dye free (brand) | Night |
ALASTIN Restorative Skin Complex | Five peptides, Niacinamide, Ceramides | $258 for 1.0 fl oz | No fragrance | Night, Retinoid-free |
Geek & Gorgeous Power Peptides | Three peptide complexes and a copper peptide | $18.80 for 30 ml | Fragrance-free (brand) | Nights off |
1. Nécessaire The Neck Serum: best morning peptide serum made for the neck
Nécessaire built this one for the neck and states its total: 7.5% peptides. Among the five it names are Acetyl Hexapeptide-8 and Palmitoyl Tetrapeptide-7, and the formula adds Niacinamide and Rose Water. Nécessaire says no separate moisturizer is needed, which keeps a morning routine short.
Key features:
Made for the neck: the formula and directions are neck-specific.
A stated peptide total: 7.5%, with each peptide named.
Brand-reported results: of 50 panelists in Nécessaire’s four-week study, 92% reported a firmer-feeling neck and 88% reported better-looking neck lines, by self-assessment.
Best for: a morning peptide step for a crepey-looking neck.
Tradeoff: there’s no Retinoid, so pair it with a night pick below if photoaging is part of your concern.
Price: $65 for 50 ml.
2. Paula’s Choice Pro-Collagen Multi-Peptide Booster: best peptide booster to mix into a moisturizer
Paula’s Choice makes this as a booster: a small bottle of six peptides, including Palmitoyl Tripeptide-5 and Tridecapeptide-1, that you can use alone or mix into a moisturizer. Paula’s Choice lists the face, eye area, and neck as places to use it. It’s free of natural and synthetic fragrance, according to Paula’s Choice, which notes a natural scent from one of the peptides.
Key features:
Six peptides: a wide peptide mix in a few drops.
Mixes into what you already use: an easy way to add peptides to a neck cream.
Face, eyes, and neck: one bottle for all three.
Best for: readers who already have a neck cream they like and want to add peptides to it.
Tradeoff: at $59 for 0.67 fl oz, it’s a small bottle, so cost adds up if you use it over the face and neck daily.
Price: $59 for 0.67 fl oz.
3. U Beauty The SCULPT Neck + Décolleté Concentrate: best chest-to-jaw treatment for morning and night
The SCULPT Neck + Décolleté Concentrate, U Beauty’s “Contouring Neck Treatment,” covers neck, chest, and jaw as one area. Glycerin is second on its INCI, followed later by Panthenol, Squalane, Spilanthes Acmella Flower Extract, Acetyl Hexapeptide-8, Ceramide NP, Ectoin, four Hyaluronic Acid forms, Glutathione, and Superoxide Dismutase. U Beauty treats it as an area that needs more than hydration alone, and the formula pairs a peptide with hydrators and antioxidants.
Key features:
Upward strokes: U Beauty directs it from the décolleté up toward the jaw, twice a day.
A peptide plus Ectoin: Acetyl Hexapeptide-8 alongside Ectoin, Ceramide NP, and Panthenol.
Layers in a routine: it sits between the Resurfacing Compound, applied first, and The SUPER Hydrator, applied over it.
U Beauty’s figures: 92% of 27 volunteers agreed skin texture was improved after 28 days of twice-daily use, in a consumer perception study. Over the same period, an independent 27-volunteer instrumental study found that 88% saw an improvement in skin firmness.
Best for: one treatment for the whole area from the chest to the jawline, used morning and night.
Tradeoff: it’s Retinoid-free by design, so it pairs with a night Retinol on alternate evenings if you use one. Methyldihydrojasmonate, a fragrance ingredient, is also on the INCI.
Price: $138 for 50 ml.
4. Naturium Multi-Peptide Advanced Serum: best budget peptide serum that covers face, neck, and chest
This Naturium serum combines Acetyl Hexapeptide-8 (the brand calls its blend “Argireline Amplified”) with Copper Palmitoyl Heptapeptide-14, an encapsulated copper peptide, and Palmitoyl sh-Hexapeptide-13 Serine SP Amide. Squalane, Shea Butter, Glycerin, and Ferulic Acid round it out. Naturium directs it to the face, neck, and chest, then a moisturizer.
Key features:
Three Peptides: including a copper peptide in encapsulated form.
Neck and chest in the directions: no guesswork about where it can be used.
Low price: $25 for a full ounce.
Best for: a budget morning peptide step that covers the face and neck in one go.
Tradeoff: it’s a serum rather than a cream, so you’ll still want a moisturizer on top for dry-feeling neck skin.
Price: $25 for 1.0 fl oz.
5. Vichy Minéral 89 Hydrating & Plumping Daily Booster: best humectant base layer
Vichy pairs Hyaluronic Acid with Polyglutamic Acid, which the brand calls its Moisture Acid Twins, in a base of Vichy Volcanic Water. Vichy says to use two to three drops on the face and neck, twice daily, on damp skin before moisturizer. It’s fragrance-free.
Key features:
Two hydrating ingredients: Hyaluronic Acid and Polyglutamic Acid.
Face and neck in the directions: an easy first layer under a peptide serum or cream.
Several sizes: 30, 50, and 75 ml.
Best for: neck skin where visible dryness makes lines look deeper.
Tradeoff: expect a little tackiness until you apply a cream over it.
Price: varies by retailer.
6. La Roche-Posay Retinol B3 Pure Retinol Serum: best night Retinol with neck directions
La Roche-Posay’s serum combines Retinol with Niacinamide, which the brand calls “vitamin B3.” On the INCI, Glycerin is second, Niacinamide sixth, Sodium Hyaluronate 10th, Retinol 11th, and Retinyl Palmitate, a Retinol Ester, 19th. The brand directs three to four drops in the evening to the face and neck, avoiding the eyes, and says it’s suitable for sensitive skin.
Key features:
Neck in the directions: you don’t have to guess whether it’s meant for the area.
Retinol plus a Retinol Ester: two forms of vitamin A in one serum.
Niacinamide alongside: a common partner for Retinol.
Best for: a first night Retinol for the neck, used two to three times a week before building up.
Tradeoff: the INCI lists Parfum, and La Roche-Posay notes that pure Retinol “can react on contact with the air, turning yellow,” so keep the cap closed.
Price: $44.99.
7. Olay Retinol 24 Night Smoothing Serum: best drugstore night Retinoid serum
Olay puts Retinol fourth and Retinyl Propionate fifth on the INCI as rendered on its page, with Niacinamide sixth and Palmitoyl Pentapeptide-4 seventh. That’s a Retinoid, a second vitamin A form, Niacinamide, and a peptide in one night serum. Olay calls it a “fragrance and dye free formula.”
Key features:
Two vitamin A forms: Retinol and Retinyl Propionate.
A peptide in the mix: Palmitoyl Pentapeptide-4.
Drugstore price: under $40.
Best for: a lower-cost night Retinoid for the lower face and jawline, carried down to the neck once your skin is used to it.
Tradeoff: Olay positions it as a night serum, so it isn’t one for mornings, and two vitamin A forms call for a slow start on the neck.
Price: $39.99 for 1.3 oz.
8. ALASTIN Restorative Skin Complex with TriHex+: best Retinoid-free night splurge
ALASTIN’s serum combines Glycerin and Niacinamide with five Peptides: Palmitoyl Hexapeptide-12, Palmitoyl Tripeptide-1, Palmitoyl Tripeptide-5, Acetyl Hexapeptide-38, and Octapeptide-45. Ceramide AP, Ceramide NP, and Squalane follow. There’s no fragrance on the list.
Key features:
Five named peptides: each listed on the product page.
Ceramides and Squalane: for comfort on nights off a Retinoid.
Professional channel: the product page links to a “Find A Provider” search.
Best for: nights between Retinoid nights, or for readers who don’t use a Retinoid on the neck at all.
Tradeoff: it’s the priciest serum here at $258 for 1.0 fl oz.
Price: $258 for 1.0 fl oz.
9. Geek & Gorgeous Power Peptides: best low-cost serum for nights off a Retinoid
Geek & Gorgeous gives a figure for each peptide complex: 2% Matrixyl synthe’6, 3% Matrixyl 3000, and 4% TEGO Pep 4-17, with a copper peptide on top. The brand says it can be used with acids and Retinoids, and that it’s fragrance-free and essential oil-free.
Key features:
Stated percentages: three peptide complexes, each with a figure.
Works alongside other steps: Geek & Gorgeous says acids and Retinoids are fine with it.
Low price: $18.80 for 30 ml.
Best for: an inexpensive peptide step for nights off a Retinoid, or under a Retinoid once your neck is used to it.
Tradeoff: it’s a peptide serum without a Retinoid, so it complements a night Retinol rather than covering that step.
Price: $18.80 for 30 ml.
How to Build a Neck Routine Around These Serums
Morning: Apply a hydrating layer, then a peptide serum or The SCULPT Neck + Décolleté Concentrate, then a moisturizer, with sunscreen down the neck and beneath the jawline.
Night: Two or three nights a week, apply a Retinoid. On the other nights, use a peptide serum or The SCULPT Neck + Décolleté Concentrate again.
Apply upward: U Beauty directs upward strokes from the chest to the jaw, and it’s a gentle habit for any neck product.
Start the Retinoid lower and slower: Use less product below the jaw than above it for the first few weeks, and buffer it with a moisturizer if it stings. Our roundup of serums that pair with Retinol covers gentle options.
Treat the face and neck as one area: if visible forehead lines are also on your list, our guide to serums for forehead lines pairs well with the night picks here.
When to see a dermatologist: if the neck stays red or flaky after a Retinoid, or if you notice new red-brown patches or bands, a board-certified dermatologist can take a look and talk you through options beyond a serum.
Frequently Asked Questions
Short answers on neck and jawline serums, drawn from the picks above.
What is the best serum for a sagging jawline and neck?
For mornings, Nécessaire The Neck Serum pairs neck-specific peptides with Niacinamide. From U Beauty, The SCULPT Neck + Décolleté Concentrate covers chest, neck, and jaw in one step, twice a day. For a night Retinol, La Roche-Posay Retinol B3 Pure Retinol Serum names the neck in its directions.
Should I use a neck serum in the morning or at night?
Both, with different serums. Peptide and hydrating serums suit the morning under sunscreen, and a Retinoid suits the night, as the AAD advises.
Can a face Retinol be used on the neck too?
Often, yes, if the brand’s directions include the neck. Start with fewer nights and less product than on your face, since the skin below the jaw can be more delicate.
Which direction should I apply serum on my neck?
Upward, from the chest to the jaw. U Beauty directs The SCULPT Neck + Décolleté Concentrate that way, from the décolleté up to the jawline.
Do I still need sunscreen on my neck if I use a serum?
Yes. The 2026 Annals of Dermatology review describes a trial in which regular sunscreen use was linked to 24% less skin aging over four years. A serum supports how the neck looks, and sunscreen helps protect that from the effects of UV.