Wax guides · Paraffin

IGI 4630

Made by The International Group, Inc. (IGI). Sold by CandleScience, Candles & Supplies. Checked .

Makers call it IGI 4630A, PARAFFLEX 4630A, Harmony Blend, 4630.

At a glance

A soft, creamy, fully refined paraffin made for single-pour containers and tealights. No additives needed.

Find your wick size

Best for
Single-pour containers up to 24 oz with a smooth, opaque, slightly glossy top and a high fragrance load.13
Watch out
Glass adhesion. CandleScience says it is sometimes tricky, and Armatage reports community complaints about the 'one pour' claim.38 See problems Read the notes
  • Melt point119°F135
  • Add fragrance at185°F3
  • Pour at160-180°F1
  • Max fragrance10%3of wax weight
  • Typical fragrance6-10%68basis not stated by the source
  • Cure time3-5 days3

Every wick size for IGI 4630

From supplier charts and makers' own tests.

12 lines.

IGI 4630 wick sizes by jar width
Jar widthWickFragranceSupplier starting pointWhat makers found
5 in / 127 mmCotton CDNot givenNone
4 x CD-10 One maker's report
What they saw

One CandleScience reviewer in a 5 in round jar with four CD-10 wicks says the burn was good but sooted a lot, and asked for help.14

Only one maker has reported this. Test it before you trust it.

3 in / 76 mmCotton ECO8%None
ECO 10 One maker's report
What they saw

One maker in a short 8 oz canning jar, 3 in across, with 8% fragrance: ECO 10 gave a good flame and melt pool but little to no hot throw, and the maker wondered if the wick was too hot.10

Only one maker has reported this. Test it before you trust it.

1.75-2.19 in / 44-56 mmCotton LX7.5%
LX 124

CandleScience wick guide for 1.75 to 2.19 in candles at 7.5% fragrance

Chart wording

CandleScience wick guide, 'IGI 4630 Harmony Blend Wax' table (our pick; tested undyed at 7.5% fragrance; chart gives no runner up for this wax)

None yet
2.2-2.69 in / 56-68 mmCotton LX7.5%
LX 144

CandleScience wick guide for 2.2 to 2.69 in candles at 7.5% fragrance

Chart wording

CandleScience wick guide, 'IGI 4630 Harmony Blend Wax' table (our pick; tested undyed at 7.5% fragrance; chart gives no runner up for this wax)

None yet
2.7-2.94 in / 69-75 mmCotton LX7.5%
LX 184

CandleScience wick guide for 2.7 to 2.94 in candles at 7.5% fragrance

Chart wording

CandleScience wick guide, 'IGI 4630 Harmony Blend Wax' table (our pick; tested undyed at 7.5% fragrance; chart gives no runner up for this wax)

None yet
2.95-3.29 in / 75-84 mmCotton LX7.5%
LX 224

CandleScience wick guide for 2.95 to 3.29 in candles at 7.5% fragrance

Chart wording

CandleScience wick guide, 'IGI 4630 Harmony Blend Wax' table (our pick; tested undyed at 7.5% fragrance; chart gives no runner up for this wax)

None yet
3.3-3.79 in / 84-96 mmCotton LX7.5%
LX 244

CandleScience wick guide for 3.3 to 3.79 in candles at 7.5% fragrance

Chart wording

CandleScience wick guide, 'IGI 4630 Harmony Blend Wax' table (our pick; tested undyed at 7.5% fragrance; chart gives no runner up for this wax)

None yet
3.8-4.2 in / 97-107 mmCotton LX7.5%
LX 264

CandleScience wick guide for 3.8 to 4.2 in candles at 7.5% fragrance

Chart wording

CandleScience wick guide, 'IGI 4630 Harmony Blend Wax' table (our pick; tested undyed at 7.5% fragrance; chart gives no runner up for this wax)

None yet
3.8-4.5 in / 97-114 mmCotton LX7.5%
3 x LX 144

CandleScience wick guide for 3.8 to 4.5 in candles at 7.5% fragrance

Chart wording

CandleScience wick guide, 'IGI 4630 Harmony Blend Wax' table (our pick; tested undyed at 7.5% fragrance; chart gives no runner up for this wax)

None yet
Not statedCotton LX7.5%
LX 84

CandleScience wick guide at 7.5% fragrance

tealight
Chart wording

CandleScience wick guide, 'IGI 4630 Harmony Blend Wax' table (our pick; tested undyed at 7.5% fragrance; chart gives no runner up for this wax)

None yet
Not statedCotton LXNot givenNone
LX 14 to 18, by fragrance One maker's report
What they saw

One CandleScience reviewer uses LX 14 to 18 depending on the fragrance, and says a candle that looked like it was tunneling caught up and burned evenly after the second or third burn.13

Only one maker has reported this. Test it before you trust it.

LX 18 to 20 (soot on the first burn) One maker's report
What they saw

One maker says LX 18 to 20 sooted on the first burn (jar not given); this maker had a 51-32z zinc on hand and would move to CD next.11

Only one maker has reported this. Test it before you trust it.

Not statedOther ZincNot givenNone
Zinc core wicks (size not given) One maker's report
What they saw

One CandleScience business owner who tested 25 fragrance oils says zinc core wicks give the best hot throw (jar and size not given).15

Only one maker has reported this. Test it before you trust it.

Zinc 51 to 60 in status jars One maker's report
What they saw

One maker uses zinc 51 to 60 for 4630 in status jars, says a full melt pool early in a jar without shoulders brings a big flame, a hot jar and soot, and burned a no-fragrance candle clean with LX 18 in a square mason jar.12

Only one maker has reported this. Test it before you trust it.

Problems makers report

  • Wet spots or pulling away from the glass

    What makers do: CandleScience suggests changing pour temperature by 5F and preheating the jar. IGI says preheat jars to 125F.31

    Read the fix: Frosting and Wet Spots in Candles: Causes and Fixes

  • The 'one pour' claim does not always hold

    What makers do: Armatage reports community complaints. Makers preheat jars and sometimes re-pour.8

  • Soot

    What makers do: Three CandleScience reviewers report soot (one with four CD-10 wicks in a 5 in jar), and two of them ask how to stop it. One maker burned a no-fragrance 4630 candle with LX 18 and saw no soot at all.14191712

    Read the fix: Why Is My Candle Making Black Smoke or Soot?

  • Glass adhesion stays poor

    What makers do: Two CandleScience reviewers say adhesion stayed poor after warming jars and changing the pour temperature. One hides it under a full label.1718

  • Looks like tunneling early, catches up later

    What makers do: One reviewer says a candle that seemed to tunnel caught up after the second or third burn and urges burning all the way down before judging. Another reviewer dislikes the tunnels this wax makes. A Craft Server maker advises burning 4 hours per cycle with a timer, and says it can take 2 to 3 cycles to melt all the way across.131620

    Read the fix: Why Is My Candle Tunneling and Can I Fix It?

Notes from the sources

  • Pour temperature differs by source. IGI says 160-180F, CandleScience 170F, Lone Star 150-160F, Armatage 165-175F, Candles & Supplies 160-190F.13685
  • IGI says fragrance retention of up to 10% by weight is possible and does not say 10% of what. CandleScience gives 10% as 1.6 oz per pound of wax for containers and 6% (1.0 oz per pound) for tealights. Candles & Supplies says up to 1 oz per pound.1235
  • IGI says candles will not creep or slump up to 104F, and to preheat jars to 125F for better adhesion to glass.1
  • IGI says to test wicks for each fragrance and dye, because they often call for a different size.1
  • CandleScience's chart for this wax lists LX only, tested undyed at 7.5% fragrance. Its product page also names LX. Armatage lists LX first and CD second. Candles & Supplies lists Heinz coreless, zinc, Ultra Core or paper core.4395
  • Armatage says the 'one pour' claim has drawn recent complaints from the community. CandleScience warns glass adhesion can be tricky and suggests changing pour temperature by 5F and preheating jars.83
  • No seller wood wick chart naming this wax was found. Lone Star's wood chart does not name the wax it was tested in, so it is not copied here.7
  • Lone Star's LX, CD and HTP charts are built on a generic 'base paraffin' and do not name 4630, so they are not copied here.7

Sources

Every number on this page comes from one of these. Checked November 8, 2026.

  1. IGI PARAFFLEX 4630A (Harmony Blend) Product Information Sheet Maker of the wax
  2. IGI: IGI 6006 Wax and Other Container Candle Blends (PARAFFLEX 4630A row) Maker of the wax
  3. CandleScience IGI 4630 Harmony Blend Wax product page Supplier
  4. CandleScience Wick Guide (container wax tables) Supplier
  5. Candles & Supplies IGI 4630A Harmony Container Wax (Paraffin) Supplier
  6. Lone Star Candle Supply: Guidelines for Choosing a Paraffin Wax Supplier Read as a summary.
  7. Lone Star Candle Supply Guide to Wicking Supplier
  8. Armatage Candle Company: The Essential Guide To Paraffin Wax Blog Read as a summary.
  9. Armatage Candle Company: How To Choose A Candle Wick (series table, no sizes) Blog Read as a summary.
  10. Craft Server thread 'IGI 4630 HT issues' (Lhays, 2021) Forum
  11. Craft Server thread 'Premier wicks in 4630?' (angelcandles, 2019) Forum
  12. Craft Server thread 'Premier wicks in 4630?' (bfroberts, quoted in the same thread) Forum
  13. CandleScience customer review, IGI 4630 (C Sm.) Other
  14. CandleScience customer review, IGI 4630 (Ed, soot) Other
  15. CandleScience customer review, IGI 4630 ('Great wax', Free) Other
  16. CandleScience customer review, IGI 4630 ('I would prefer MP 117 over this', No thanks) Other
  17. CandleScience customer review, IGI 4630 (Jess B.) Other
  18. CandleScience customer review, IGI 4630 (Amy C.) Other
  19. CandleScience customer review, IGI 4630 ('Great wax but', Ronda) Other
  20. Craft Server thread 'What wick brand/size for Igi 4630 wax?' (Flicker, 2012) Forum