Denture cleansers & adhesives: manufacturers and brands

104 companies make or specify denture care products among the 149 that list one with FDA, under 333 brand and model names. FDA has issued 52 510(k) clearances in this category, 0 of them in the last five years.

1977: 11978: 31979: 41980: 11981: 11982: 11983: 31984: 21985: 41986: 51987: 31988: 51989: 21990: 51993: 31994: 62000: 12006: 12008: 119801990200020102020

510(k) clearances per year, 1976–2026

Denture care product manufacturers

Makers first, then the most recently active. “Maker” means the company manufactures the device or owns its specifications; a “lister” repacks, relabels, imports or distributes it.

CompanyCountryRoleBrands and models listedClearancesLatest
Dentsply Sirona, Inc.United StatesMaker—1482026
Align Technology, Inc.United StatesMakerCleaning Crystals, Packette162026
Kulzer, LLCUnited StatesMakerPala Brillance Denture Cleanser · Venus Rapid Fresh Cleanser372026
Prevest Denpro LimitedIndiaMakerOradox Aligners and Retainers Cleansing Tabs · Oradox Denture Cleansing Tabs72024
Premier Dental Products CompanyUnited StatesMakerPro Clean282026
Lakong Medical Devices Co., Ltd.ChinaMakerUltrasonic Cleaner - denture22026
Cavex Holland BVNetherlandsMakerCavex GreenClean262015
Procter & GambleUnited StatesMaker—162020
Thermoplastic Comfort Systems, Inc.United StatesMakerTCS Fresh Concentrated Dental Appliance Cleaner32015
Manufacturera Dental ContinentalMexicoMakerConfident Denture Cleaner · Confident Denture Adhesive Cream · Confident Denture Adhesive Powder22001
Protech Professional Products, Inc.United StatesMakerPROTECH CONCENTRAT · SMILE AGAIN22015
Tower Laboratories, Ltd.United StatesMakerAll Smiles Denture Tablets · Best Choice Effervescent Denture Cleanser Anti-Bacterial · Best Choice Effervescent Denture Cleanser Anti-Bacterial 3-Minute · Bi-mart Effervescent Denture Cleanser Anti-Bacterial · +8111983
Prestige Brands Holdings, Inc.United StatesMakerEfferdent Coffee and Tea · Efferdent Complete Clean Denture Cleanser · Efferdent Denture Cleanser Coffee and Tea · Efferdent Denture Cleanser Original · +712013
Zhengzhou Huaer Electro-optics Technology Co., Ltd.ChinaMakerCleanser, Denture, Denture Cleanser, denture cleaning tablets12020
Bonyf AGLiechtensteinMakerNitrAdine Disinfecting Tablets - DENTTACH CLEAN · OlivaFix Gold Denture Adhesive Cream - DENTTACH Gold · Denture Adhesive Cream superior (DENTTACH CLASSIC - DENTTACH FRESH) · OlivaFix Denture Adhesive Cream (DENTTACH GREEN - DENTTACH GREEN FRESH)12006
Debo Medical Technology (Shijiazhuang) Co., Ltd.ChinaMakerCleaning Tablet · denture cleaner——
Great Lakes Dental Technologies, Ltd.United StatesMakerDentasoak——
ZOGEAR Medical Co., Ltd.ChinaMakerCleaning Tablet——
Jiangxi IVISMILE Technology Co.,LtdChinaMakerDenture Cleansing Tablet——
Hubei Guarddent Medical Technology Co.,LtdChinaMakerRetainer Storage Case/Retainer Box/Denture Box——
Cangzhou Lankang Medical Instruments Developing Co., Ltd.ChinaMakerDenture cleansing tablet · Interdental brush——
Guangzhou Xinuo Technology Co., LtdChinaMakerDenture Cleansing Tablet · denture adhesive powder——
Jiangsu Yabaobao Medical Instrument Co.,Ltd.ChinaMaker———
Shenzhen Senlede Technologies Co., LtdChinaMakerDenture Cleansing Tablet · denture adhesive powder——
Jiangxi Dentalbright Technology Co., LtdChinaMakerDenture Cleansing Tablet, Aligner Cleaner——
Nanchang White Technology Co., Ltd.ChinaMakerDenture Cleansing Tablet, Aligner Cleaner · Denture Adhesive Cream; Denture Adhesive Powder——
READY SET IMPORT dba Mynt ProfessionalUnited StatesMakerRSI Denture Cleanser Tablets · RSI Denture Adhesive——
Produits Dentaires SASwitzerlandMakerDisclosing Tablets · Effervescent Mouth Wash Tablets, Pink——
one day dental partnerSouth KoreaMakerkage cleanser——
Everbrands, Inc.United StatesMakerBrightByte · Candid Whitening Foam · EverSmile Aligner Fresh · EverSmile Aligner Fresh Spray · +8——
Ekong Technology Co., Limited.ChinaMakerDenture Cleansing Tablet——
LLRN Personal Care (Shenzhen) Co.,ltdChinaMakerDenture Cleansing Tablet · denture adhesive cream; denture adhesive powder——
Anhui Greenland Biotech Co.,LtdChinaMakeraligner cleaner · Avistar · cleaning tablets · DENTAL CHECK · +16——
Erskine DentalAustraliaMakerOral Appliance Cleaning Tablets——
DOC BRANDS, Inc.United StatesMakerClean-It——
Jiangxi Ushine Bright Medical Co., Ltd.ChinaMakerDenture Cleansing Tablet/Aligner Cleaner · Denture Adhesive Cream; Denture Adhesive Powder——
Changzhou IVORIE Shengmei Packaging Technology Co.LtdChinaMakerDenture Cleansing Tablet——
Tianjin Water Source Tech Co., Ltd.ChinaMakerDenture Cleanser——
Fuzhou Delphin Bio-tech Co., Ltd.ChinaMakermouthwash tablets, Oil Pulling, Cleaning Crystals, Toothpaste Tablet, DSI Oil Pulling · Mouthwash, mouth spray, denture cleansing tablets, mouth tray cleaner, aligner cleaner, cleaning tablets,——
HaleonUnited StatesMakerDENTURE CLEANSERS (VARIOUS) · Polident · Polident 3 Minute: Antibacterial Dental Appliance Cleanser · Polident Cleaner · +5——
Shandong Zhushi Pharmaceutical Group Co., LtdChinaMakerMouthwash, Denture cleansing tablets, Cleanser, Denture, Denture Cleanser——
Dukal CorporationUnited StatesMakerDawnMist Denture Cleanser Tablets · DawnMist Denture Adhesive——
Plasdent Shanghai Co., Ltd.ChinaMakerDenture Cleanser——
Shenzhen YiGuangNian Innovation Technology Co., Ltd.ChinaMakerCleaner, Denture, Mechanical - Electric Tooth Cleaner:XPRE151,XPRE152,XPRE174; · Electric Tooth Cleaner XPRE176, Electric Tooth Cleaner XPRE178 Electric Ear Cleaner XPRE323 XPRE330 · Teeth Cleaner XPRE146 IFAN042; XPRE058 Makeup Brush Cleanser,XPRE127 Electric Tooth Cleaner, · XPRE128 Electric Tooth Cleaner, IFAN059-IFAN060 XPRE151 XPRE174 Electric Tooth Cleaner——
Kingkey MBC Life Technology Group Co.,Ltd.ChinaMakerAcne treatment facil cream · Acne treatment facil wash · Acne treatment toner · MOUTHWASH——
Shenzhen Balinda Technology Co.,LtdChinaMakerDenture Cleaning Tablet, Denture Cleanser · Ultrasonic Cleaner/Ultrasonic Retainer Cleaner/Ultrasonic Denture Cleaner——
Sheffield Pharmaceuticals LLCUnited StatesMakerCleanadent · Combe Denture Adhesive Cream · Dawn Mist Denture Adhesive · Dr. Berland's Adhesadent Moisturizing Denture Adhesive · +8——
Dongguan MiQiang Technology Co., LtdChinaMakerCleaner, Denture, Mechanical - Electric Tooth Cleaner: XPRE151,XPRE174 · Electric Tooth Cleaner, XPRE151 XPRE174, Electric Tooth Cleaner Cleaner, Denture, Mechanical · XPRE058 Makeup Brush Cleanser, XPRE127 Electric Tooth Cleaner: XPRE128,——
PHS Do Brasil LTDABrazilMakerPOTENZA CLOUD CLEAN——
Renfert GmbHGermanyMakerSympro——
Shenzhen Mold and Manufacturing Co LtdChinaMakerBeaming White——
Fittydent Int. GmbHAustriaMakerPROFAST DENTURE CLEANER · PROFAST DENTURE CLEANSER · Secure Denture Cleanser · Secure orthodontic Cleansing Tablets · +2——
Weihai Jieshi Commodity Manufacture Co., Ltd.ChinaMakerDenture cleaner, Denture clean tablets——
Xingyue Medical Health Technology (Nanjing) Co., Ltd .ChinaMakerDenture&Retainer Cleanser/Tablets——
Dabur India LimitedIndiaMakerDabur · Freshmint · IODENT · Personal Care——
Dongguan Mingchuangyoushang Electronic Technology Co., Ltd.ChinaMakerRetainer Cleaner Machine MYT1——
Shenzhen Xiazhifeng Electronic Co., LtdChinaMakerWhiten teeth faster——
Weihai Huihai Commodity Manufacture Co., Ltd.ChinaMakerStain remover——
Gurunanda LLCUnited StatesMakerGuruNanda Aligner and Retainer Cleaning Foam · Invisalign Aligner Cleaning Foam——
iSonic Inc.United StatesMakeriSonic® AlignClean Ultrasonic Cleaning Tablet · iSonic® Green Natural Ultrasonic Denture Cleanser · iSonic® White Ultrasonic Denture Cleanser · iSonic® Ultrasonic Denture Retainer Cleaner——
Foshan Ousidun Personal Care Products Co.,LtdChinaMakerDenture Cleanser——
New World Imports, Inc.United StatesMakerFreshmint · CareALL——
Changzhou Freshday Household Products Corp. Ltd.ChinaMaker———
Kakawa USA CorpUnited StatesMakerBLD Dental Floss——
North Eos Industries IncTaiwanMakerDentBox · EOS BRAND——
OrVance LLCUnited StatesMakerOrVance Retainer Cleaner——
Yangzhou Sinje Biotechnology Co.,LtdChinaMakerCleanser, Denture, over the counter——
Yangzhou star oral care product co., ltd.ChinaMaker———
Blossom PharmaceuticalsIndiaMakerDenture Adhesive——
Braebon Medical CorporationCanadaMakerCPAPFresh · OrthoFresh——
Hangzhou Namei Zhikang Technology Co., Ltd.ChinaMakerElectric Mouthwash Oral Irrigator:E31——
Havpak, Inc.United StatesMaker———
Kiyoujochugiku Co., LtdJapanMakerDent Clear——
Movemints, LLCUnited StatesMakerMovemints Aligner and Retainer Cleaning Tablets——
Wisdom Toothbrushes Ltd.United KingdomMakerWisdom denture bath (3 piece)——
Yancheng Trancom First Aid Supplies Industrial Co., LtdChinaMakerSkin cleaning wipes——
AOJ HEALTH Technology Co., Ltd.ChinaMakerUltrasonic Cleaner USC-10 · Ultrasonic Cleaner USC-20——
Diamond Wipes International, Inc.United StatesMakerTCS Concentrated Dental Appliance Cleaner · TCS Concentrated Denture Cleaner——
Jiaoyue Pharmaceutical (Huizhou) Co.ltdChinaMakermouthwash——
KP Dental LLCUnited StatesMakerZima Tablets——
MicroCare, LLCUnited StatesMakerTartar & Stain Remover · Tartar & Stain Remover Super Concentrated——
Novalab Inc.CanadaMakerBrushguard · Novadent——
Regent Labs, Inc.United StatesMakerKLEENITE · STAIN AWAY PLUS——
Shenzhen Rainbow Technology Co.,LtdChinaMakerUltrasonic Braces cleaner,retainer cleaner denture cleaner RB-038, RB-038B,RB-038C,RB-038D——
Teamwork Packaging, Inc.United StatesMakerCPAPFresh · OrthoFresh——
AndersonBrecon Inc.United StatesMakerFixodent——
Brushee LLCUnited StatesMakerBrushee Retainer & Aligner Cleaner——
Changsha GOMECY Electronics Co., Ltd.ChinaMakerPlasma Machine:GMS PM 01, GMS PM 02, GMS PM 03, GMS PM 04, GMS PM 05. GMS A59, GMS B59——
Cory LabsUnited StatesMakerCory Labs——
Diversified Chemical Products, Inc.United StatesMakerProClean——
Goran Pharma Pvt. Ltd.IndiaMakerFresh'n Brite Denture Cleaning Paste——
Hubei Kangcheng Non-Woven Co LtdChinaMakercleanser, denture, over the counter——
LMA Solutions Inc.United StatesMakerdentibrite——
Mid-Continental Dental Supply Co. Ltd.CanadaMakerRenew Denture Cleaner——
Ningbo Favored Commodity Co.,ltdChinaMakerCaring Mill Retainer Cleaning Tablets——
Redi-2-PaQ Home Products, LLCUnited StatesMakerSmilesaver Spearmint Spary 30 ml (1flo2)——
USpharma LtdUnited StatesMakerCushion Grip——
Accupac, LLCUnited StatesMaker———
Akervall Technologies Inc.United StatesMaker———
Andpak, IncUnited StatesMaker———
Ecolab IncUnited StatesMaker———
Etol Gesundheitspflege-und Pharmaprodukte GmbHGermanyMaker———
Pasini Laboratorio Chimico S.n.c.ItalyMaker———
Unette CorporationUnited StatesMaker———
Park Dental Research CorpUnited StatesContract manufacturerDenture Cleansing Tablet82026
Somnomed, Inc.United StatesManufacturerSomTabs112026
Ortho Organizers, Inc.United StatesManufacturer—82025
Sleeping Well, LLCUnited StatesRepacker / relabelerZQuiet Clean62022
Myofunctional Research Co. Usa Inc.United StatesForeign exporterMyoClean32026
DSI Dental Solutions LtdIsraelManufacturer—22025
Astron Dental CorporationUnited StatesRepacker / relabelerDuraclean Denture Cleaner · Duraclean II Denture Cleaner51987
Valplast Intl. Corp.United StatesManufacturerVal-Clean · Denture Sonic12006
Perflex LtdIsraelManufacturerFlexiclean12015
Perma LaboratoriesUnited StatesManufacturerFizz-It Denture Cleaner12012
Dentimed Sao Joao LLCUnited StatesRepacker / relabelerTOSCANA · ANGELUS——
TitanLinks Logistics LLCUnited StatesRepacker / relabelerUltrasonic Cleaning——
Jmu Dental, Inc.United StatesRepacker / relabelerRetainer Box, Denture Box——
Daiso USA LLCUnited StatesForeign exporterDenture Cleansing Tablet——
Yizur LtdHong Kong SAR ChinaForeign exporterUltrasonic Cleaning——
LLD Care d.o.o.CroatiaForeign exporterPro Clean Stain Cleaner——
Medline Industries, LPUnited StatesContract sterilizerSparkleFresh Denture Adhesive Cream——
Ortho Dental Lab, LLCUnited StatesManufacturerSmileSet Universal Cleaning Tablets——
Maxill Inc.United StatesForeign exporterMaxill——
Beaming White LLCUnited StatesManufacturerBeaming White——
Plasdent CorporationUnited StatesRepacker / relabelerDenture Cleanser——
WSD Labs Usa Inc.United StatesRepacker / relabelerDenture Cleansing Tablet——
Summit Packaging Solutions LLCUnited StatesRepacker / relabelerOver The Counter Denture Cleanser · Polyvinyl Methylether Maleic Acid Calcium-Sodium Double Salt- Adhesive, Denture——
Axiom Marketing, Inc.United StatesRepacker / relabelerInvisalign Aligner Cleaning Foam · Invisalign Aligner Cleaning Spray · Invisalign Cleaning Crystals · Invisalign Cleaning Crystals + · +2——
WestRock Converting, LLCUnited StatesRepacker / relabelerFIXODENT · Poligrip Partials; Super Polygrip Cream; Super Poligrip Cushion & Comfort; Super Poligrip Powder——
HiSmile Pty LtdAustraliaForeign exporterHismile Germ Warfare Dental Appliance Cleaning Powder——
Libodent Inc.United StatesRepacker / relabelerMetal frame partial · Valplast——
Planet(Shanghai) international Co.,LtdChinaForeign exporterCLEANSER, DENTURE, OVER THE COUNTER——
Gda Marketing LimitedHong Kong SAR ChinaForeign exporterFresh 'N Brite——
Jack Jack LLCUnited StatesListerAligner Cleaner——
Ryder Integrated Logistics, INCUnited StatesRepacker / relabeler———
Advanced Concept Innovations LLCUnited StatesRepacker / relabelerFixodent——
Bright Supply IncUnited StatesLister———
GEODIS LogisticsUnited StatesRepacker / relabelerEfferdent——
LG Management Dental Lab, Inc.United StatesRepacker / relabelerLG Management Dental Lab——
Platinum Focus Group Ltd.United KingdomForeign exporterY Connector Prismaflex Box of 50——
Veridian HealthcareUnited StatesRepacker / relabeler19-030 Theracare Ultrasonic Oral Appliance——
VIVE Health LLCUnited StatesRepacker / relabelerDenture Cleaning Tablets——
Honest Pharma LLCUnited StatesRepacker / relabeler———
Mainline Medical Dental SupplyCanadaForeign exporter———
Natural Dentist LLCUnited StatesRepacker / relabeler———
Oketz Logistics LLCUnited StatesRepacker / relabeler———
RespLabs Medical USA Inc.United StatesLister———
Vehu Medical Instrumente GmbHGermanyRepacker / relabeler———
Worldwide Supplies LimitedHong Kong SAR ChinaForeign exporter———

Source: FDA establishment registration & device listing, 510(k) and product classification files · FDA data as of 2 Nov 2026 · snapshot 12 Nov 2026

Where denture care products are made

Number of makers in this category with a manufacturing establishment in the country.

Recent clearances

Decided510(k)DeviceApplicantDevice type
23 May 2008K080631CLEANSE.FRESHEN.GO; ALIGNER CLEANSING TOWELETTE AND DENTAL APPLIANCE CLEANSEROral Health Technologies, LLCEFT Over the Counter Denture Cleanser
2 Jun 2006K051342MEDICAL INTERPOROUSBonyf AGEFT Over the Counter Denture Cleanser
16 Jun 2000K000996TRUBYTE DENTURE CLEANSER/POLISHING COMPOUNDDentsply Intl., Inc.EFT Over the Counter Denture Cleanser
20 Dec 1994K945462SUPER POLI-GRIP DENTURE ADHESIVE CREAMBlock Drug Company, Inc.KOT Carboxymethylcellulose Sodium or Polyvinyl Methylether Maleic Acid Calcium-Sodium
30 Nov 1994K945200FIXODENT, FIXODENT FRESH, FASTEETH AND EXTRA HOLD FASTEETH DENTURE ADHESIVCESProcter & GambleKOO Polyvinyl Methylether Maleic Acid Calcium-Sodium Double Salt Denture Adhesive
3 Nov 1994K943486ORAFIX SPECIAL DENTURE ADHESIVESmithkline Beecham Corp.KOO Polyvinyl Methylether Maleic Acid Calcium-Sodium Double Salt Denture Adhesive
10 Aug 1994K942203OTC DENTURE CLEANSERCombe, Inc.EFT Over the Counter Denture Cleanser
22 Apr 1994K941365MPI DENTURE ADHESIVE FILM SEALSMedical Polymers, Inc.KOT Carboxymethylcellulose Sodium or Polyvinyl Methylether Maleic Acid Calcium-Sodium
1 Feb 1994K930335PROFAST - DENTURE ADHESIVE FOR LOWER JAWSFittydent-Altwirth & Schmitt GmbHKOO Polyvinyl Methylether Maleic Acid Calcium-Sodium Double Salt Denture Adhesive
7 Sep 1993K930337PROFAST(R)-DENTURE CLEANSERFittydent-Altwirth & Schmitt GmbHEFT Over the Counter Denture Cleanser
13 Jan 1993K914257DENTURE PRODUCT XEssential Dental Systems, Inc.EFT Over the Counter Denture Cleanser
11 Jan 1993K925259CFR MONOGRAPHCombe, Inc.EFT Over the Counter Denture Cleanser
24 Oct 1990K903568SUPER STRENGTH DENTURE ADHESIVE CREAMTeledyne GetzKOT Carboxymethylcellulose Sodium or Polyvinyl Methylether Maleic Acid Calcium-Sodium
6 Sep 1990K902838DENTURE DYNAMIC'S DENTURE MAGICDenture Dynamic'S, Inc.EFT Over the Counter Denture Cleanser
29 Aug 1990K903686ARGILITE 4 GOLD ALLOY FOR PORCELAINArgen Precious Metals, Inc.EFT Over the Counter Denture Cleanser
3 Apr 1990K895818STEADFAST DENTURE ADHESIVE CREAMStiefel Research Institute, Inc.KOT Carboxymethylcellulose Sodium or Polyvinyl Methylether Maleic Acid Calcium-Sodium
7 Mar 1990K895345ORAD TOOTHBRUSH CLEANEROrad, Inc.EFT Over the Counter Denture Cleanser
7 Jun 1989K890043DENTCLEAN CONCENTRATED DENTURE CLEANSERK-P Co.EFT Over the Counter Denture Cleanser
17 Apr 1989K890668CLEAN DENTLincoln Park Dental LaboratoryEFT Over the Counter Denture Cleanser
1 Nov 1988K884357PRECISION BIOPORT COLLECTION & TRANSPORT SYSTEMPrecision Dynamics Corp.KOT Carboxymethylcellulose Sodium or Polyvinyl Methylether Maleic Acid Calcium-Sodium
25 Oct 1988K883403DENTA PLUSConnoisseurs Products Corp.JER Mechanical Denture Cleaner
26 Aug 1988K881391ULTRASONIC DENTURE CLEANERTatung Company of America, Inc.JER Mechanical Denture Cleaner
7 Mar 1988K880068EFFERVESCENT DENTURE CLEANSERPerrigo Co.EFT Over the Counter Denture Cleanser
16 Feb 1988K874805TATUNG'S DENTURE CLEANING SOLUTIONTatung Company of America, Inc.EFT Over the Counter Denture Cleanser
11 Sep 1987K871785DENTURE CLEANSING TABLETPennex Products Co., Inc.EFT Over the Counter Denture Cleanser
11 Aug 1987K872521DENTURE CLEANSERSDental Research LaboratoriesJER Mechanical Denture Cleaner
30 Jun 1987K872225SUPER POLI-GRIP & WERNET'S DENTURE ADHES. POWDERBlock Drug Company, Inc.KOT Carboxymethylcellulose Sodium or Polyvinyl Methylether Maleic Acid Calcium-Sodium
29 Aug 1986K862876NEW SUPER POLI-GRIP DENTURE ADHESIVE CREAMBlock Drug Company, Inc.KOO Polyvinyl Methylether Maleic Acid Calcium-Sodium Double Salt Denture Adhesive
12 May 1986K854995DENCLENZCreighton Products Corp.EFT Over the Counter Denture Cleanser
17 Apr 1986K860118SUNBEAM ULTRASONIC DENTURE CLEANER MODEL 4220Northern Electric Co. Div. of Sunbeam Corp.EFT Over the Counter Denture Cleanser
26 Mar 1986K860737TEEN CLEAN, RETAINER CLEANERTeen Care, Inc.EFT Over the Counter Denture Cleanser
4 Mar 1986K854430RIGIDENT CREAMArmkel, LLCKOT Carboxymethylcellulose Sodium or Polyvinyl Methylether Maleic Acid Calcium-Sodium
31 Jul 1985K852906DURACLEAN DENTURE CLEANERAstron Dental CorporationJER Mechanical Denture Cleaner
29 Apr 1985K851183PEPSODENT DENTURE CLEANSER PDP FORMULALever Brothers Company, Inc.EFT Over the Counter Denture Cleanser
29 Apr 1985K851182PEPSODENT DENTURE CLEANSER-WESTONE FORMULALever Brothers Company, Inc.EFT Over the Counter Denture Cleanser
18 Jan 1985K844572PRE-KLENE ENAMEL CLEANERMedical Products Laboratories, Inc.EFT Over the Counter Denture Cleanser
22 Jun 1984K841801DENTURE CLEANSERMiracle Clean, Inc.EFT Over the Counter Denture Cleanser
30 Mar 1984K840805ORAL SAFEGreat Lakes Orthodontics, Ltd.JER Mechanical Denture Cleaner
26 Sep 1983K832359ORAL SAFEGreat Lakes Orthodontics, Ltd.JER Mechanical Denture Cleaner
12 Sep 1983K832387DENTURE CLEANERTower Laboratories, Ltd.JER Mechanical Denture Cleaner