Slime 101

Thank you for taking the time to browse the Slime Party UK store! We hope you find everything you need to enjoy our slimes and slime making products at home. 

We hope the following section provides a little extra information to assist your shopping experience with us:

Slime 101

Always wash your hands before and after playing with slime. Slime is best when kept in a cool environment. Keep out of direct sunlight.

Sensory Slimes

Please note that our sensory slimes are very different to other slimes.  
Our sensory slimes are activator free, this means that the slimes will not deactivate, if your sensory slimes feels a little sticky, remove from the container and just knead for a minute, if it’s still sticky, just leave somewhere cool with the lid partially on for 10-15 mins.
If your slime becomes a little stiff, add a little hand or body lotion and knead in well (start with a little and add more if needed)
Always make sure that the slimes are returned the their containers after play with the lids tightly secured. 
Our sensory slimes contain clay powder which gives the slimes a fantastic butterslime texture, however the slime will dry out if not placed back in an airtight container.

Care instructions for slimes in the Slime & Candy boxes and Mystery Boxes

Why is my slime sticky?

Your slime may become sticky and melt over time due to heat and exposure to direct sunlight. Sometimes your slime may start to deactivate during shipping due to the changing temperatures and environments your slime box is exposed to. If this has happened to your slime, don't worry, it can easily be fixed!

Included in every slime box is activator and a slime care sheet. Simply follow the instructions on the slime care sheet to restore the slime to its perfect texture.


You should:
  • First find a clean and clear surface.
  • Open your slime, add a couple of drops onto the top and a couple of drops to your hands.
  • Remove from the container onto your surface and knead in the activator for 10-20 seconds.
  • If your slime is still sticky, then add 2-3 more drops of activator and knead again.

Don't add too much activator as this will over-activate the slime and make it tough. Always add in small amounts and knead thoroughly.


My slime is too stiff

Leave your slime for a little while and allow it to come up to room temperature. If after this it's still stiff, then add a couple of drops of warm water and knead.

My clear slime has gone cloudy

When you play with clear slime it will create tiny air bubble which can make the slime go white or look cloudy. This is completely normal. Just leave your slime in the container for up to a week and it will clear up again.

The floams beads in my crunchy slime keep falling out

With floams and crunchy slimes, a little fall out is normal. If an excessive amount of beads are falling out, this is because the slime has had too much activator added to it. To fix this, leave your slime in the container at room temperature tor a while so the slime can break down.

What is Slime?

Slime is a stretchy and squishy sensory toy for girls, boys and adults alike.

Our Slime Making Kits and DIY Slimes are a fun way to get children interested in science. Slime is a polymer made up of very large chains of molecules. Chemical bonds are formed when you mix the PVA glue and a slime activator together. Activators (saline solution, borax or liquid starch) change the position of the molecules in the glue; this process is called cross-linking.

Not only are slime kits and slime play educational and fun for all the family, but they can also be incredibly beneficial for children by:

  • Helping strengthen fine motor skills through creating and manipulating slime.
  • Learning cause and effect through mixing different substances.
  • Providing calming sensory play.
  • Improving concentration and focus.
  • Encouraging independent play.

Sensory play is vital in children's development and playing with slime enables children to get in touch with all their senses, focusing on how it feels, sounds, looks, and smells. The sensory aspects of slime can also reduce stress and anxiety for adults.

What is slime made from?

Slime is made from PVA glue and activator. Other ingredients include: lotion, fragrance oils, pigments, glitter, shaving foam, clay, instant snow and foaming soap. These slime ingredients give the slimes different sensory aspects of how they look, sound, smell and feel.

What ages is slime suitable for?

We recommend that our slimes and slime making kit boxes are for children aged 6 and over. We do however have a special sensory slime box just for little hands, recommended for children aged 3 and over.

Do I need to supervise my children whilst playing with slime?

As with any activity for children we recommend that they are supervised at all times, some items may contain small parts and therefore present a choking hazard if swallowed.


I'm buying slime as a gift, will it keep?

We don't recommend buying slime well in advance as slime can deactivate over time. We advise purchasing your slime gifts as close to the date as possible (don't worry we have very fast and reliable shipping). If you are unsure, please do not hesitate to contact us before purchasing.

What do l do if I have an issue with my order?

If for any reason you need assistance with your order, then please get in touch with us as soon as possible.

If you need to make changes to your order before it is received, it may be possible if the order has not been processed for shipping yet.

If in the rare and unfortunate instance that there is an issue with your order after you have received it, please take images, and contact us ASAP.

We will always do everything we can to resolve any issue.