Scintillating Solution

Effect unknown. However, one satisfied customer of the Kwikspell course happily wrote to tell them that their recipe for this potion was now in great demand. [CS8]

Shrinking Potion

Ingredients: Caterpillar, Daisy roots, Leech juice, Rat spleen, Shrivelfig. This a an acid green potion which is on the third year syllabus. Snape uses it to turn Neville’s toad into a tadpole; it is unclear whether the potion makes things simply reduce in size, or actually reduce in age.

Skele-Gro

This causes lost bones to re-grow, which is a slow and painful process. Harry only had his arm bones removed because of Lockhart’s incompetence; it seems unlikely that under other circumstances Skele-Gro has to be used very often.

Sleekeazy's Hair Potion

This is used to calm down problem hair so it can be styled. Hermione used liberal amounts of it when she went to the Yule Ball with Viktor Krum.

Sleeping Draught/Potion

Causes the drinker to fall asleep. A standard Sleeping Draught differs from the Draught of Living Death, which is a much more powerful version.

Strengthening Solution

Ingredients: Pomegranate juice and Salamander blood. Effect unknown, but presumably this potion makes the drinker stronger. It could, however, be designed for inanimate objects if the potion was intended to be applied to them. Harry made this potion (very badly) in a 5th year class whilst Snape was being assessed by Umbridge. Umbridge disapproved of teaching this particular potion to the students, and Snape took very little notice of her. [OP17]

Swelling Solution

Causes whatever it touches to swell up in size.

Ten-Second Pimple Vanisher

This comes in a small pink pot and is excellent on anything from boils to blackheads. It is sold at Weasleys' Wizard Wheezes.

Veritaserum

A powerful truth potion. It is used to make the drinker answer any questions put to them truthfully. Use is strictly controlled by the Ministry of Magic.

Wiggenweld Potion

Leticia Somnolens was a spiteful hag who was jealous of the king’s daughter and caused her to prick her finger on a spindle tainted with a Draught of the Living Death. A young wizard smeared his lips with Wiggenweld Potion, kissed the princess, and brought her out of her trance.

Wit-Sharpening Potion

Ingredients: Scarab beetles, Ginger roots, Armadillo bile. The effect of this is not known, although it is likely to involve sharpening the wit of the drinker (in other words, making them able to think better).

Wolfsbane Potion

A new and complex potion, this relieves the symptoms of lycanthropy (although it does not cure it). If the affected person drinks the potion at full moon, they transform only into a normal wolf (and retain control over their actions) rather than bloodthirsty out-of-control werewolf.

Wound-Healing Potion

This is a smoking purple liquid which heals and closes open wounds. Madam Pomfrey uses it on Harry when he has been injured during the first task of the Triwizard Tournament.